Service technicians have no problem recognising breakdowns and carrying out machine diagnostics, HYUNDAI Car Fault Codes DTC, plus they are familiar with equipment from a variety of manufacturers.
Hyundai Motor Company, often abbreviated to Hyundai Motors and commonly known as Hyundai, is a South Korean multinational automotive manufacturer headquartered in Seoul, South Korea. Hyundai Motor Company was founded in 1967. Currently, the company owns 33.88 percent of Kia Corporation, and also fully owns two marques including its luxury cars subsidiary, Genesis Motor, and an electric vehicle sub-brand, Ioniq. Those three brands altogether comprise the Hyundai Motor Group. Hyundai operates the world’s largest integrated automobile manufacturing facility in Ulsan, South Korea which has an annual production capacity of 1.6 million units. The company employs about 75,000 people worldwide. Hyundai vehicles are sold in 193 countries through 5,000 dealerships and showrooms.
Car Fault Codes DTC – Hyundai Solaris, Hyundai Accent, Hyundai Santa Fe, Hyundai Tucson, Hyundai IX35, Hyundai Starex, Hyundai Elantra, Hyundai Getz, Hyundai Porter, Hyundai Sonata.
HYUNDAI Common Faults
U3FFF Message that appears when using unlicensed OBD 2 diagnostic software. It is not necessary to purchase a license for verification; you can use another software.
P3C00 On Hyundai NF and other models, this code cannot be decrypted and appears when using a scanner that cannot read all combinations of errors
P250F The on-board computer detected a too low engine fluid level in the engine. It is necessary to check the volume of consumables and, if necessary, test the operation of the sensor, designed to fix its level.
486B Unknown code, the appearance of which is associated with the use of inappropriate diagnostic equipment
9406 A common mistake on airbags.
Items to check:
– SRS security system control unit;
– airbag sensors;
– pretensioning elements of the system;
– wires coming from the control unit of the security system to its constituent components.
P0000 No malfunction in the components and systems of the car
P0441 Literal interpretation of error P0441 – “poor purge of the system for trapping fuel vapor.” When the code 0441 or 441 appears, you should diagnose the sensors of the system, as well as make sure the integrity of all pipes.
P0401 The combination P0401 (0401) appears when the efficiency or lack of it in the exhaust gas recirculation system is low. If such a problem occurs, the user needs to diagnose all the sensors, as well as make sure the integrity of the pipes and lines. Damaged channels must be replaced.
P0444 The combination P0444 appears when the purge valve of the vapor recovery system in the open state is stuck. If error 0444, check the operation of the device and replace it in case of failure. Perhaps the valve lies as a result of lack of lubrication on the moving mechanism.
P0446 Error P0446 indicates a malfunction in the control mechanism of the air valve of the vapor recovery system. With a P0 446 error, it is necessary to check the functionality of the drive and test the operation of all controllers.
P0455 On-board computer detected a serious leak in the vapor recovery system. If error P0455, a detailed check of all system components is required for leaks, damaged hoses and nozzles are replaced with new ones.
P0741 Incorrect clutch adjustment. The appearance of error P0741 may be due to a malfunction of the mechanism itself, as well as one of the sensors of the system. In some cases, the reason is due to incorrect operation of the microprocessor module.
P1127 On-board computer indicates problems with exhaust fumes. The user should begin the search for the cause by testing the oxygen controllers, since after starting the engine their self-diagnosis was not performed.
P1372 Literally, this code stands for “incorrect receipt of the segment time.” Most likely, the reason is a malfunction of the engine control unit or malfunctions in its operation.
P1770 Code P1770 appears when the control module of the EMC system is malfunctioning
P1782 Error P1782 indicates a malfunction in the intake manifold control system. The control unit informs the car owner that the first engine bank is stuck in the open position. A detailed diagnosis of the power unit is required.
P1847 The P1847 code on Hyundai AH35 and other models is common and indicates a malfunction in the traction control system.
Possible causes of the malfunction:
– malfunctions in the operation of one of the sensors of the ABS system;
– faulty wiring, damage to electrical circuits, oxidation of contacts, bending of wires;
– malfunctions of the engine control module;
– malfunctions in the operation of the ABS control unit.
B1650 Power steering pressure switch is out of self-test range. Most likely, the cause of the problem is damage to the wiring or incorrect resistance detected by the on-board computer on the power line of the switch.
HYUNDAI Fuel system malfunctions Fault Codes
P0087 Error P0087 occurs when the pressure in the fuel line decreases, which may be caused by the following malfunctions:
– fuel pressure sensor breakdown;
– a malfunction of the fuel pump device located in the tank;
– malfunctions of the fuel pressure control valve;
– failure or clogging of the fuel injector;
– wear of the push rod located in the high pressure gas pump.
Symptoms associated with this problem:
– increase in fuel consumption;
– swimming revolutions when starting the power unit, which leads to an arbitrary stop of the motor;
– difficulty starting the engine on a cold;
– the engine goes into emergency operation and the inability to increase speed above 3 thousand per minute.
P0088 Code P0088 appears at elevated pressure in the fuel rail. Error 0088 may be due to a malfunction of the system sensor itself.
P0456 The control unit detected a small leak in the evaporative exhaust emission control system.
Possible causes of the problem:
– the user did not close the cap of the neck of the fuel tank or it was lost;
– leakage in one or more nozzles or fuel filler hose;
– leak in the adsorber or gas tank.
P1188 Code P1188 indicates a fuel system leak. The cause of the problem may be damage to the system lines or improper operation of the sensors.
HYUNDAI Engine malfunctions Fault Codes
P0011 Code P0011 can literally be deciphered as “an error in the position of the camshaft A. Synchronization or system performance.”
Possible reasons for the appearance of code 0011:
– use of contaminated or low-quality motor fluid;
– failure of the valve for changing the valve timing;
– damage to the power supply circuit of the VTC valve or short circuit of the contact elements;
– mechanical malfunctions in the operation of the power unit;
– damage to the contacts on the electrical block of the VTC sensor;
– failure, damage or incorrect operation of the ECM control module.
When this code appears, the engine may run less smoothly at idle, and a reduction in engine power is also possible.
P0012 Literally, error P0012 stands for “position A of the camshaft – too long ignition delay.”
Possible causes of the malfunction:
– poor contact of the controller with the car’s electrical network;
– contamination of the engine fluid or clogging of the oil channel with contaminants;
– malfunction of the oil regulator.
P0014 Code indicates an incorrect position In the camshaft. The cause of the problem may lie in the sensors, as well as incorrect adjustment of the labels when replacing the timing belt.
P0016 Code 0016 appears when the relationship between the crankshaft and camshafts is broken. The appearance of error P0016 may be due to the mismatch of the pulses from the controllers. It is necessary to check the operation of the sensors and their wiring. If the problem occurs after replacing the timing belt, you need to make sure that the marks on the pulleys match.
P0017 If error P0017, the on-board computer reports an out of sync signal from the crankshaft and camshaft sensors
P0170 Error P0170 is associated with a violation of the ratio in the formation of the air-fuel mixture, possible causes of the problem:
– clogged air filter;
– a malfunction of the air flow meter or oxygen controller installed before the catalyst device;
– failure of spark plugs or the appearance of soot and deposits on them;
– air intake in the intake tract, pipes under the throttle assembly, intake manifold and behind the sensors are subject to diagnosis;
– nozzle malfunction as a result of the appearance of soot on them;
– damage to the exhaust pipe.
P0171 Error 0171 is associated with the depletion of the air-fuel mixture due to air suction. You need to look for a leak by checking all components of the system for integrity.
P0172 Code P0172 indicates an enriched mixture in one or more engine cylinders
P0299 Error P0299 occurs when the pressure recorded in the turbine or discharge device is too low. A possible cause may be the boost pressure controller.
P0300 Error P0300 is general and indicates single or multiple misfires in one of the engine cylinders.
Possible reasons for the appearance of the code 0300:
– incorrect composition of the air-fuel mixture associated with malfunctions in the operation of nozzles;
– malfunction of high-voltage candles, wires or other components of the ignition system;
– decrease in compression in the cylinders of the power unit associated with the destruction or – sticking of the piston rings.
P0301 Code P0301 is associated with misfire in the first engine cylinder
P0302 The control unit registered misfires in the cylinder number 2 of the power unit
P0303 Error P0303 reports the occurrence of misfire in the third cylinder of the engine
P0304 The on-board computer detected misfires in the fourth engine cylinder.
P0420 Code P0420 appears as a result of low catalyst throughput. If the device itself is whole, then the combination 0420 may be due to the use of low-quality fuel or the failure of the second oxygen regulator. To fix the problem, the user needs to make sure that there is no coolant in the engine, and also check the ignition timing.
P0421 Literally, code P0421 stands for “too low heating efficiency of the catalyst device B1”
P0422 The combination of P0 422 or 0422 is associated with low efficiency of the main catalyst B1. The operating parameter of the device is below an acceptable threshold. The user needs to check the catalyst unit, as well as to verify the integrity of all highways of the system.
P0430 Code P0430 appears at reduced efficiency of catalyst system B2
P0670 Malfunctions or malfunctioning of the glow plug control module. Motor malfunctions are possible. To fix the problem, you should check the quality of connection of all wires to the candle control module.
P1119 The control unit reports a malfunction in the solenoid valve for adjusting the fuel supply
P1123 Combinations P1123 or 1123 appear as a result of re-enrichment of the air-fuel mixture in one of the engine cylinders
P1183 Fuel pressure regulator stuck open An error may occur due to injector malfunctions.
P1190 Failure or incorrect operation of the intake throttle drive mechanism. The cause of the problem may be the motor of the device.
P1193 The control unit recorded a low engine speed that does not meet the normalized parameters. The user is recommended to first check the operation of the idle speed sensor.
P1335 Malfunction of the throttle actuator control system. With error 1335, the position of the shutter is out of range.
P1402 Error P1402 is associated with a malfunction in the catalytic system
P1403 Code 1403 is associated with a malfunction of the valve of the leakage diagnostic module
P1505 The system of control of idling of the car works in adaptive mode
P1513 The on-board computer reported an IMRC intake manifold control failure. The problem is in the second bank of the engine – the unit is stuck in the closed position.
P1553 Code 1553 appears when the idle valve is constantly locked. The cause of the problem may lie both in the sensor itself and in its wiring.
P1890 Malfunction in the clutch that determines the torque of the engine. The lower limit of the operating parameter does not correspond to the normalized indicators. It is recommended to check the quality of the contact, as well as the mechanism itself. The cause of the problem may be the 4WD control module.
P2002 An error appears only on vehicles with a diesel power system and reports a particulate filter failure. A detailed diagnosis of the cleaning device is required and its replacement if necessary.
P2096 Code P2096 or 2096 appears when the air-fuel mixture is lean in the cylinders of the power unit. Information is fed to the control unit from oxygen controllers that record an excess of oxygen and a lack of fuel in the exhaust gases.
Possible causes of the problem:
– cracks in the exhaust manifold;
– damage to gaskets or o-rings;
– fuel injector contamination;
– failure or incorrect operation of the gasoline pump;
– clogged fuel or air filter;
– failure or malfunction of the fuel pressure sensor.
P2106 Error due to forced voltage limitation in the throttle drive system. The code appears when the motor torque measured as a result of damage to the wiring exceeds the permissible values for a specific crankshaft speed and gas pedal position. The cause of the problem may be a poor contact or a break and a short in the power line of the electric motor.
P2113 Code 2113 reports a malfunction in the throttle assembly, the user needs to check the operation of the damper.
P2119 A P2119 error indicates a malfunction in the throttle assembly. The cause of the problem may be an incorrect signal coming from the device, as well as damage to the throttle body. It is necessary to verify the integrity of the electric motor, high-quality contact, and also that the adaptation of the unit was performed correctly.
P2187 When the code P2187 appears, the engine control unit reports a depletion of the air-fuel mixture in the engine cylinders when idling. The combination is fixed with a working MAP sensor, as well as working controllers for the temperature of antifreeze and afterburning of fuel vapor.
Possible reasons for the appearance of the code 2187:
– air leakage due to damage to one of the lines;
– fuel pressure does not meet standardized indicators;
– PCV valve seizure;
– coking of injectors.
P2188 The combination P2188 appears during the re-enrichment of the air-fuel mixture in the cylinders of the power unit.
Causes of error 2188 on cars 2004, 2005, 2009 and other years of release:
– Clogged air filter located in the engine compartment. The device must be cleaned or replaced.
– A clogged fuel pump or its malfunction. Perhaps the cause of the problem is a breakdown of the fuel pressure sensor in the fuel line.
– Malfunction of nozzles, due to which the adjustment of the composition of the combustible mixture is disturbed. Devices are subject to detailed diagnostics using the stand.
– Malfunction of air pressure controllers or flow meter. Sensors must be replaced or cleaned, if appropriate.
P2189 A lean air-fuel mixture when the engine is idling. The problem should be sought in the second bank of the power unit.
P2191 Code P2191 is associated with the depletion of the air-fuel mixture when the engine is operating at high loads
P2192 Combination P2192 appears when re-enriching the air-fuel mixture at high engine loads.
HYUNDAI Sensor Failures Fault Codes
P0134 Complete failure or problems in the functioning of the oxygen controller
P0036 Error P0036 appears when the oxygen controller is not working properly. The user needs to diagnose all sensors, since the controller number is not indicated.
P0105 Error P0105 is associated with a breakdown of the air pressure regulator. It is necessary to test the operation of all connectors and wires connected to the controller.
P0130 The combination P0130 appears in the event of a malfunction of the first oxygen sensor installed in bank 1 of the engine. If the error is not related to the breakdown of the lambda probe, then the cause should be sought in the wiring or poor-quality contact of the regulator with the wiring.
P0133 Code P0133 indicates a slow response of the oxygen regulator 1 installed in the first engine bank. As a result of error 0133, problems with the formation of the air-fuel mixture are possible.
P0135 Code P0135 reports a malfunction associated with the heating element of the first lambda probe installed in Bank 1
P0136 Malfunction of the second oxygen regulator installed in the first bank of the engine
P0141 The combination of P0141 is associated with a malfunction of the heating mechanism of the second oxygen controller installed in the first bank. Sometimes the cause of error 0141 is the sensor itself or its poor contact with the vehicle electrical system.
P0156 On Santa Fe 24l Diesel and other versions of the Hyundai, this code appears when a second lambda probe fails or malfunctions. This refers to the controller located in the second bank.
P0335 Code P0335 is fixed by the control unit in the event of a failure of the crankshaft position sensor A. To fix this problem, you need to test the controller and perform diagnostics of its wiring. Clogged sensor connectors must be cleaned or replaced. Error code 0335 may be due to deterioration of the insulation on the power supply wire of the device.
P0336 Malfunction of the engine crankshaft position sensor A. The on-board computer clarifies that the cause is due to the missing of one clove on the shaft. The user should check the crankshaft and camshaft, and then test the controller itself.
P0340 or 0340 combinations appear when the camshaft controller malfunctions. To fix the problem, remove the sensor and clean its contacts, since it is located so that in rainy weather dirt can remain on the connector.
P0507 The on-board computer detected a malfunction in the idle speed sensor – the engine speed is too high. In case of error Р0507 it is necessary to check the controller and its connection, damaged contacts and wires are replaced with new ones.
P0660 Malfunction of the control valve for changing the intake manifold length
P0707 Reduced pulse coming from the controller of the transmission unit. If errors P0707 or 0707, it is necessary to check the operation of the gearbox sensor, as well as the control module of the device.
P0711 The combination 0711 appears when the correct values come from the gearbox oil temperature controller. The cause of the problem may be that the device is not adjusted.
P0717 Error P0717 is associated with a malfunction of the turbine speed controller. There is no signal from the device to the control unit, which may also indicate damage to the wire or poor connection to the controller.
P0750 Failure or malfunction of the solenoid switch device A
P1128 Code P1128 or 1128 appears when the controllers of the upper level with oxygen heating are broken or malfunction
P1131 On-board computer with error P1131 cannot detect the presence of a heated oxygen controller switch. Data from the regulator indicates that the air mixture is leaner in the first engine bank.
P1166 Code P1166 appears when a malfunction of the oxygen controller installed in the first engine bank.
Possible reasons for the 1166 code to appear:
– the appearance of air leaks in one of the highways;
– poor connection of vacuum tubes or their damage;
– mechanical failure of one of the elements of the exhaust system to the catalyst device;
– malfunction or clogging of the throttle, cleaning may be required to resolve the problem;
– clogged air filter.
P1167 Combination 1167 appears when the oxygen regulator breaks down
P1180 Malfunctions in the fuel pressure regulator
P1181 Code 1181 appears when the fuel pressure sensor fails
P1186 error occurs as a result of a breakdown or incorrect operation of the fuel pressure sensor. With code 1186, the cause of the problem may be a broken wire or damaged contacts on the controller.
P1187 Code P1187 indicates a malfunction of the fuel pressure regulator. With such an error, the valve of the device will be stuck in the open or closed positions.
P1507 Literally, this code stands for “too low signal in the drive circuit of the idle speed sensor in the second winding.”
Possible causes of this error:
– breakdown of the idle speed regulator fuse if the vehicle is equipped with it;
– cable damage or breakage in the area from the sensor to the control module;
– failure or clogging of the fuel filter device, which led to a decrease in pressure in the system;
– mechanical damage to the idle speed sensor housing;
– damage to the contact elements of the controller;
– sticking of the controller in one of the positions, which led to the fact that the power unit cannot gain speed;
– damaged battery cable;
– too high resistance of the touch device on the controller;
– malfunction of the control module by the power unit;
– breakdown of the servomotor of the idle speed sensor.
P1605 Faulty knock control sensor, this problem is accompanied by the following “symptoms”:
– the difficulty of starting the power unit;
– “Triple” of the motor, the appearance of a metallic knock of “fingers” from under the hood at high loads;
– engine power reduction.
P1624 On-board computer recorded failures in the engine cooling fan at first speed.
Possible reasons for this code to appear:
– relay malfunction;
– failure of the fan itself, in particular, its electric motor;
– malfunction of the engine control unit.
P2122 Malfunction of the gas pedal or throttle shutoff controller. It is recommended to diagnose both sensors, as well as check their wiring and the quality of the connection to the mains. The cause of the problem may be dirt sticking to the pads.
P2159 Error P2159 reports a malfunction or malfunction in the operation of the touch speed controller mounted on the wheel. At Hyundai cars 2011 and other years of production, this problem can usually be solved by cleaning the contact elements on the device connection block.
B1214 Malfunctions in the rear left sensor. It is necessary to check the operation of the ABS controller installed in the wheel. A possible cause may be damage to the device’s power cable or poor contact with the network. Also, the problem may be the clogging of the contact elements on the connection block.
B1329 Malfunction of the front impact controller located on the driver’s side. The cause of the problem may be a communication failure.
C1200 Malfunctions in the front left wheel speed controller. The cause of the problem may be a break in the wiring or damage to the block, so you should check the integrity of the electrical circuit and connector.
C1201 Error C1201 Indicates a malfunction in the front left wheel rotation controller.
C1202 Failure or malfunction of the front left wheel speed controller. Diagnostics of all contacts on the sensor connector is required, as well as checking the quality of its connection. The cause of the problem may be clogging of the contact elements.
C1203 Malfunction of the speed controller mounted on the front right wheel
C1204 Another error code reporting malfunctions in the anti-lock sensor installed on the front right wheel
C1205 Malfunction of the right front wheel speed controller
C1206 Error C1206 indicates problems in the operation of the rear left wheel speed controller. The cause of the malfunction may be a break or damage to the wiring, as well as a short circuit in the power circuit of the device.
C1208 Rear Left Wheel Speed Sensor Malfunction
C1209 Failure or malfunction of the speed controller mounted on the rear right wheel
C1210 Failure or malfunction of the speed controller located on the rear right wheel
C1211 Another error regarding the rear right wheel speed controller.
C1213 Failure or incorrect operation of the traction control controller.
Possible causes of the error:
– failure of the sensor itself;
– incorrect installation of the controller or its incorrect connection;
– damage to the rotor mechanism and wheel bearing.
C1245 Malfunction of the left traction control controller
C1274 ABS sensor failure
C1283 Malfunction of the vehicle rotation controller around the vertical axis. The cause of the problem should be sought in the sensor itself, its wiring and block.
C1290 Breakage or incorrect operation of the steering angle sensor
C1292 The on-board computer indicates a malfunction in the operation of the torque controller. The cause of the problem is the failure of the main or auxiliary signals or both pulses at once.
C1513 Malfunction of a switch mounted on the brake pedal. The cause of the problem may be due to clogged pins on the sensor connection block, so first check the connector.
C2380 Error in the operation of the traction control valve. The device is subject to detailed diagnostics and replacement in the event of a breakdown.
U0126 Communication failure steering angle. The user needs to test the operation of the 4WD module, because he does not see the pulse from the sensor.
U1111 Battery breakdown (battery). With such a malfunction, the battery icon may light up on the dashboard, even if the device is charged.
HYUNDAI Malfunctions of electrics and electronics Fault Codes
P250C Undervoltage detected on the power line of the engine fluid level controller. It is necessary to check all the connectors and the integrity of the wires, and then diagnose the sensor itself.
P0030 Malfunction of the power cable of the heating element of the oxygen sensor. The lambda probe number is not indicated, so the user needs to search for the controller independently.
P0031 The error is due to damage or breakage in the wiring supplying the heating element of the oxygen regulator installed in the first bank. The cause of the problem may be the undervoltage detected on the device’s power line. If the wiring is intact, then the oxygen controller must be replaced.
P0032 The on-board computer recorded an increased voltage on the control line of the heating device of the oxygen regulator 1 installed in the first bank.
Possible reasons for the appearance of the code P0032:
– cable breakage of the heating element of the oxygen regulator or a short circuit on the line;
– malfunction of the heating device;
– poor-quality contact or disconnection of the controller power wire;
– failure or incorrect operation of ECM or PCM modules.
P0037 On the Hyundai Elantra 4 2010 and other years of release, this code reports a reduced voltage registered on the control line of the heating device of the second lambda probe. It is necessary to test in detail the sensor located in the first bank.
P0038 Overvoltage recorded by the on-board computer on the power line of the lambda probe heater. With error P0038, the Check Engine indicator always lights up on the instrument cluster.
P0047 Malfunction or incorrect signal recorded on the power line of the turbocharging system pressure control solenoid valve
P0056 On the Hyundai Sonata 5, Elantra J3 and other car models, this code indicates a malfunction recorded in the heating circuit of the second oxygen controller. This refers to a lambda probe located in the second row of cylinders.
P0077 Damage to the inlet solenoid valve line
P0079 Break or damage to the cable supplying the electromagnetic exhaust valve installed in the first row of cylinders
P0102 Error P0102 appears when the impulse coming from the flowmeter is reduced. It is recommended to clean the mass air flow sensor before replacing it; for the task, you can use a special tool for the carburetor.
P0101 The malfunction is due to the out of range of the signal from the mass air flow sensor
P0106 Error P0106 or 0106 appears as a result of the pulse output of the air pressure controller outside the normal range
P0108 On the EF Sonata 2001 and other models, code 0108 reports an increased signal from the airflow pressure controller. It is necessary to diagnose the flowmeter and its contacts. The cause of the problem may be a clogged sensor; you can use a carburetor cleaner to remove contaminants.
P0113 The on-board computer of the car detected a too high signal on the power line of the intake air temperature controller
P0116 The on-board computer has detected a signal from the antifreeze temperature controller in the cooling system that goes beyond the normalized range. It is necessary to check the operation of the sensor and the resistance on the electrical circuit of its power supply. Perhaps the cause of the problem is not the device, but the use of low-quality refrigerant.
P0117 Reduced pulse coming from the antifreeze temperature controller
P0118 The engine control unit detects an increased signal coming from the antifreeze temperature controller
P0121 Code P0121 is associated with a malfunction in the wiring supplying the throttle position controller A. The pulse from the sensor is outside the operating range.
P0123 Overvoltage on the power supply line of the throttle unit A.
P0132 Increased signal level coming from the first lambda probe located in the bank 1 of the engine
P0134 Error P0134 indicates the lack of activity of the output pulse of the first lambda probe. If there is no signal, the reason must be sought in the wiring or contacts of the device.
P0138 Code P0138 denotes an increased level of the output pulse coming from the second oxygen controller installed in the first engine bank
P0139 Malfunctions associated with the circuit or the oxygen sensor 2 installed in the first bank. An incorrect signal is sent from the device with a too slow response to enrichment or depletion of the air-fuel mixture.
P0140 Code P0140 is associated with the lack of activity of the output pulse of the second oxygen controller installed in the first engine bank
P0183 Increased pulse level recorded in the electrical circuit of temperature controller A.
P0193 Increased pulse coming from the fuel pressure controller in the fuel rail. It is necessary to check all the contacts of the sensor and make sure the integrity of its wires.
P0230 Error P0230 occurs as a result of damage to the power cable of the primary fuel pump control circuit. A possible cause may be the fuel pump relay control circuit.
P0320 Code P0 320 appears when the power line of the switchgear of the ignition system is damaged. It is necessary to check all the contacts of the distributor and clean them or replace if necessary. First of all, with error 0320, it is necessary to diagnose high-voltage wires.
P0325 Code 0325 appears when there is a malfunction in the electrical circuit of the first knock controller
P0326 Combinations P0326 or 0326 appear as a result of an incorrect pulse supplied from the first detonation controller. Sensor 1 must be checked for integrity and its operating parameters of voltage and resistance to be normalized (the latter are indicated in the service manual).
If the sensor is really defective, this may be accompanied by the following symptoms:
– engine triple when driving at idle;
– power unit reduction;
– spontaneous engine stop in traffic jams, at traffic lights;
– increase or decrease idle speed.
P0339 The combination P0339 appears when an incorrect signal is received from the crankshaft position controller A
P0341 Error P0 341 indicates that the pulse supplied to the control device from the camshaft controller is outside the operating range
P0342 P0342 or 0342 errors indicate a reduced signal from the camshaft controller.
P0343 The combination of P0343 indicates too high a pulse level coming from the engine camshaft controller
P0350 Damage or short circuit on the primary or secondary line of the ignition coil
P0404 The pulse from the exhaust gas recirculation system controller is outside the operating range. With error P0404, a detailed check of the sensor and the wiring going from it to the control unit is performed.
P0405 Undervoltage on the exhaust gas recirculation controller line. The cause of the problem may consist in the drive unit of the system, as well as the position line of the electric motor.
P0449 Violation of the integrity or operation of the power circuit of the solenoid valve purge adsorber. If, with error P0449, the cable is intact, it is necessary to test the operation of the valve itself.
P0489 Undervoltage in the exhaust gas recirculation sensor circuit
P0500 The on-board computer detected that there is no pulse from the vehicle’s speed controller to the engine control unit
P0501 Code P0 501 appears as a result of an invalid signal from the speed controller. The pulse from the sensor is out of range.
P0504 Code P0504 appears when the signals of the sensors installed on the brake pedal are mismatched
P0560 Code P0560 indicates a too low supply voltage that does not meet standard ratings
P0562 Code 0562 is associated with a reduced system voltage.
Possible causes of the problem:
– discharge of the battery or its mechanical damage, which led to the leakage of electrolyte;
– malfunction of the generator device (voltage regulator relay, clutch or other structural components of the unit).
P0605 Internal microprocessor module memory error
P0611 Malfunction in the injector control module. The cause of the problem may lie in the unit itself or in a circuit on the device power circuit.
P0620 Damage to the wiring through which the generator assembly is connected. With such a problem, voltage surges in the car’s electrical network are possible. The user needs to check the battery, as well as the generator device, to diagnose all the wires connected to the node.
P0650 Error P0650 is related to damage or malfunction of the trouble indicator light line. The user needs to check the operation of the MIL device, make sure that it is in good contact with the wiring.
P0703 On-board computer fixed a problem in the integrity of the power line of the controller In reducing torque during braking
P0704 Code P0704 appears as a result of a malfunction or damage to the wiring supplying the clutch controller.
Possible causes of the problem:
– the sensor itself is faulty;
– cable damage or wear of the insulating layer;
– moisture, dirt, or dust getting on the contact elements of the sensor connector;
– damage to pins on the device block;
– incorrect operation or failure of the microprocessor module.
P0705 Damage to the power line of the gearbox sensor. The causes of the problem can be similar, as is the case with the clutch controller.
P0708 Transmission unit controller receives too high signal
P0715 Error P0715 occurs when the turbine speed controller power line is damaged or broken
P0720 Damage or breakage in the cable supplying the speed sensor of one of the shafts. With error P0 720 (0720), a detailed check of the conductor for integrity is required.
P0721 Error P0 721 means an incorrect pulse recorded on the power line of the high-speed controller
P0722 Combination 0722 appears when there is no signal from the shaft speed controller
P1116 The control unit has detected an open in the heating circuit of one of the oxygen controllers. The regulator number is not specified, so the user will have to search for the damaged cable on his own.
P1120 Code P1120 appears when the signal from the throttle assembly position sensor is incorrect
P1134 Malfunction in the activation timer of the oxygen sensor. If the lambda probe does not turn on at the right time, this will affect the formation of the air-fuel mixture and the ratio of air and fuel in it. Accordingly, such a problem can lead to a decrease in engine power.
P1135 The on-board computer reports a malfunction in the power line of the heating system of the air or fuel controller. The user needs to check both sensors, as well as the quality of their connection to the vehicle’s power supply.
P1324 Combination P1324 reports a malfunction of the temperature switch
P1500 Code P1500 is the result of damage or breakage in the power line of the fuel pump relay. In some cases, the cause is a malfunction of the relay or fuse responsible for the operation of this unit.
P1502 This code OBD2 indicates the presence of a short to + 12 volts on the fuel pump relay. The first thing to do in such cases is to check the operation of the safety elements, relays and contacts in the sockets.
P1503 Malfunction of the immobilizer, possible causes of malfunctions in the operation of the engine blocker:
– software failure;
– breakage or mechanical damage to the chip;
– malfunction of the engine control unit;
– mechanical damage to the key, antenna breakdown or battery discharge;
– Damage or breakage of the busbars responsible for the exchange of information between the engine blocking elements.
P1520 Code P1520 reports a fault in the intake manifold control line
P1593 Literally, this code translates as “Inauthentic Automatic Recognition of 2WD / 4WD Systems”. The cause of the malfunction may lie in the recognition system wire itself, as well as in damage to the electrical circuit of the communication line via the digital interface. Also, the problem may be a malfunction of the ECM.
P1609 Lack of communication or signal loss between the engine control unit and the immobilizer
P1610 OBD 2 error P1610 appears as a result of a communication failure between the microprocessor-based motor control module and the engine blocker. The cause of the problem in practice usually consists in interruptions or increased voltage.
P1616 The microprocessor module reports an error in the encoding memory in the engine control unit.
P1623 Break or damage to the power line of the Check Engine trouble lamp. When error P1623 occurs, the user needs to test the power line of the indicator light installed on the dashboard.
P1630 Short circuit in the fan relay power circuit. The cause of the problem may be a break in the wiring, so you should diagnose the line for integrity.
P1672 The control light indicator for low pressure of the engine fluid is malfunctioning or malfunctioning. A detailed check of the wire and light bulb connected to the instrument cluster is required.
P1675 The control circuit of the solenoid of the vapor recovery system is faulty, wiring diagnostics is required
P1676 Malfunction of the immobilizer, diagnostics of all components of the engine blocking system is required. With error P1676, difficulties in starting the power unit are possible.
P1678 Literally, code P1678 is translated as “immobilizer, no signal or request from the EMS module”. Most likely, the cause of the problem is the damage to the communication line, so the user needs to perform block diagnostics for disconnection, poor-quality contact and bends. If there are signs of corrosion on the contacts, the block must be replaced.
P1689 Malfunction of the error memory module
P1690 Malfunction of the diagnostic indicator light. If error P1690 occurs, you should check the lamp operation, as well as make sure the integrity of the wiring and contacts on the connection block.
P1692 Malfunction of a control light indicator of the engine blocker
P1693 Code P1693 reports that the MIL bus or controller is not working properly. The cause of the problem is due to an overestimated signal coming from the device. The user needs to check all the wires and contacts on the connection block, and also make sure the integrity of the cables.
P1695 Combination P1695 reports an internal immobilizer EMS memory malfunction
P1696 When errors P1696 or 1696, the on-board computer of the vehicle reports that the engine blocker key is not recognized by the control module. It is necessary to look for the cause of the problem in the immobilizer control unit and its contacts.
P1709 The combination P1709 appears when the parking radar switch malfunctions. The device does not work or does not show a neutral position during self-diagnosis.
P1726 On-board computer reports no signal at the input of the TPS module
P1752 General error indicating an invalid signal in the power supply system
P1765 Error P 1765 occurs when damage to the engine torque reduction wiring is damaged, problems may occur with the power unit
P1771 The combination P1771 appears when the EMC module is arbitrarily disconnected
P1801 When error P1801 is recorded, the engine control module reports malfunctions in the immobilizer operation. The code 1801 is usually associated with the use of an immo bypass block.
P1805 Codes 1801 and 1805 are associated with incorrect operation of the immobilizer. If the engine does not start with error P1805, check the operation of the lock. Perhaps the cause of the problem is the discharge of the battery installed in the key.
P1820 The on-board computer detected a too high current level on the electric motor of the pumping device for the 4WD system. The cause of the problem may be a lack of contact, an open or shorted wiring. If the cable is intact, then the malfunction should be sought in the internal malfunction of the coupling.
P1830 4WD Module Clutch Failure
P1822 Open wiring load of electric pump motor for 4WD system. The user needs to check the contact elements, the integrity of the wiring, as well as perform diagnostics of the coupling for internal malfunctions.
P1843 Invalid pulse coming from the powertrain coolant temperature controller
P2015 Wiring failure or incorrect signal recorded on the electrical circuit of the controller or switch of the intake manifold length system
P2017 The on-board computer has detected an increased voltage level on the power line of the intake manifold length sensor. It is required to check the working element of the position controller of the adjustable vortex valve.
P2095 If the on-board computer issues a code 2095, this indicates a damage to the control circuit of the camshaft position actuator
P2118 A signal is found on the throttle control circuit that does not match the rated parameters. Node control motor performance reduced.
P1221 The microprocessor module reports a lack of communication with the throttle
P2271 On Hyundai NF and other models with a gasoline or diesel engine, this code indicates the absence or incorrect signal from the oxygen controller 1 installed in the first engine bank. A detailed diagnosis of wiring and connection quality is required.
P2454 An error indicates a malfunction of line A of the differential pressure controller installed on the CPF filter device. The on-board computer notes that the signal is too high on this circuit, which may be due to damage to the cable or disconnecting the contacts. The reason may be the wear of the insulation on the circuit, as a result of which the resistance on the line changes.
B1102 Vehicle battery voltage is too low. It is necessary to check the battery, as well as the operation of the generator set.
B1112 Undervoltage in the ignition circuit
B1238 Open wiring supply to the outdoor temperature controller
B1346 Code B1346 is associated with a high level of resistance in the driver’s airbag electrical circuit. The module itself is located in the center of the steering wheel under the plastic cover. High resistance may be due to damage to the insulation layer of the cable supplying the pillow, as well as clogged contacts.
B1367 The increased resistance parameter recorded on the power line of the pretensioner of the safety strap on the front passenger side.
Possible causes of the problem:
– poor connection of the device or its arbitrary disconnection as a result of exposure to vibrations during movement;
– lack of contact between the shunt jumper, as well as the release rod of the device;
– malfunctions in the operation of the control module RVRT;
– malfunction of the SRSCM device.
B1406 Malfunction in the sensor of the security system designed to detect the front passenger. It is necessary to diagnose the contacts and the power circuit of the device.
B1462 On the Hyundai Sonata EF 2006 and other years of manufacture, this code appears when the passenger line controller for passenger presence is cut off
B1511 Shorting the power line to the battery of the driver-mounted safety strap switch
B1620 Internal malfunction of the SRS system. If the airbag sensors and pretensioners are intact, diagnostics of the host control module is required.
B1701 High voltage level on the power line of the tensioning element of the strap bracket on the driver’s side. It is necessary to test the wiring supplying the pretensioner for breaks and short circuits.
B1706 Increased resistance on the line of the tensioner of the bracket for the front passenger safety strap
B2406 Malfunctions in the electric motor of the air conditioning mixing valve.
Possible causes of the problem:
– poor-quality contact in the wiring harness of the motor connection;
– open or short circuit in the power circuit of the electric motor;
– malfunction of the driver air mixing device from the driver;
– malfunction or breakdown of the air conditioning control unit.
B2500 Code 2500 indicates a malfunction in the airbag warning indicator. The user should diagnose the wiring supplying the light bulb, and also check the operation of the control unit if the circuit is intact.
B2503 Faulty or missing signal from the SRS warning indicator – security system
B2505 Failure of the airbag deactivation indicator light
C1103 General voltage error in the ignition system. The cause of the problem may lie both in the battery with the generator set, and in the lock itself. It is necessary to check all the contacts of the switch and the contacts of its power supply.
C1616 Error C 1616 is a result of a disconnected or inoperative CAN interface. It is necessary to check all the connectors on the wires connected to the microprocessor module.
C1259 Malfunction or damage to the power supply circuit of the steering wheel position adjuster.
The following components must be checked:
– harness with power wires for a short circuit or break;
– harness with earth cables for possible damage or short circuit;
– steering angle controller;
– EPS control unit.
C1260 Damage to the power line of the steering wheel controller. If the sensor itself is faulty with error C 1260, it must be calibrated.
C1274 Open or short circuit in the circuit of the longitudinal acceleration controller
C1503 Switch ESP module malfunction. The cause of the problem may be the switch itself, as well as an open or short circuit in the power line.
C1555 Code C1555 appears as a result of welding the contact elements of the relay of an electric motor or electric motor of the power steering gear. The relay is located in the microprocessor module and must be replaced in case of breakage.
C1604 EPS hardware failure. First you need to check the quality of the device’s connection, but most likely, the electric power steering system module will have to be changed. In some cases, the device can be fixed by flashing the device.
C1611 Literally, code C1611 stands for “Exceeding the signal waiting time from the electronic control unit (ECU) by the engine on the CAN bus”. This means that the microprocessor control module for the electric power steering does not receive information from the engine ECU. It is necessary to check all wiring and connectors and change the control unit of the amplifier if necessary.
C1627 Code C1627 appears as a result of the lack of communication via CAN interface with the 4WD control module. To fix the problem, the user needs to diagnose all the wires and contact elements on the block connector.
C1652 On-board computer reports CAN interface signal error
C1702 Error C1702 can literally be translated as “coding errors in a variant”. The malfunction is network and usually consists of damage to the contacts on the CAN interface of the transmission unit control module.
C2112 Faulty electronic valve relay. The user needs to look for an open or short in the IGN + power circuit.
C2402 Error C2402 reports a break in the winding of the traction control motor. A possible cause may be damage to the device case and water ingress. To eliminate the malfunction, it is necessary to dismantle and disassemble the module, followed by cleaning the brushes.
U0001 Disable High Speed CAN Interface
U0003 No communication with digital CAN interface. The user needs to check all the wires and connectors connected to the control module.
U0004 Speed detected on CAN digital interface data bus line too high
U0008 High speed CAN bus malfunction – the on-board computer detected an increased voltage on the line
U0009 Diagnostics of the digital CAN interface is also required, since the signal passing on the line does not comply with the normalized parameters. In case of error 0009, the connector of the engine control unit is checked first.
U0010 The average speed of the CAN interface does not meet the standard values. It is recommended that you check the diagnostic connector and clean it to remove any dirt from the contacts.
U0019 This fault indicates a reduced data rate on the CAN bus. The cause of the problem may be damage or clogging of the contacts on the connectors, as well as a short circuit.
U0101 Communication failure or lack of communication between engine control modules and gearbox via CAN bus. Possible causes may be malfunctions of the speed controllers of the primary or secondary shafts, as well as the drive mechanism.
U1112 Communication failure with the LIN interface. To fix the problem, the user needs to diagnose each module connected to the LIN interface, as well as the battery sensor.
U1451 The control unit does not receive a signal from the control module of the passive anti-theft system PATS. The on-board computer clarifies that the device’s motor is turned off.
U0D00 General error of the digital CAN interface.
HYUNDAI Transmission malfunction Fault Codes
P0218 Overheating of the transmission unit.
Possible causes of the problem:
– the use of a low-quality or used transmission fluid;
– failure of one of the gearbox sensors;
– improper operation or malfunctions in the operation of the transmission control unit;
– malfunctions or breakdown of the torque converter.
P0700 The P0700 combination indicates problems with the operation of the transmission control system. With error 0700, it is recommended to check the control module with the transmission unit, as well as perform diagnostics of all contacts of the unit. A possible cause may be damage to the wires.
P0701 The control system of the transmission unit is outside the range of acceptable characteristics, an incorrect signal is supplied from the control module device
P0702 Malfunction of the electrical transmission control system
P0705 Wiring damage or malfunction of the box sensor
P0706 Transmission controller malfunctioning or device not adjusted
P0707 Reduced indicator coming from the gearbox sensor
P0713 An error indicates transmission oil overheating or incorrect readings from the lubricant temperature sensor.
Possible reasons for the appearance of the code P0713:
– breakdown of the oil temperature controller in the gearbox;
– poor connection of the sensor, damaged contacts, broken wires;
– wear of the oil filter in the transmission unit;
– use of low-quality or spent transmission fluid used for its service life.
First of all, it is recommended to check the quality of the consumables. If traces of deposits and sediment are visible in the oil, the fluid must be replaced.
P0730 General code indicating the lack of adjustment of the vehicle gearbox
P0731 The combination indicates an incorrect adjustment of the first gear. Diagnose the control module as well as the drive unit and transmission selector.
P0732 Code P0732 is associated with incorrect adjustment of the second gear. If error 0732, the user is advised to check the transmission control unit.
P0733 Code P0733 appears when the third transmission speed is incorrectly adjusted
P0734 The combination P0734 appears as a result of incorrect adjustment of the fourth gear. Corrective action is similar.
P0753 Malfunction of the solenoid valve A shift control system
P0885 Error controlling the transmission unit. The cause of the malfunction should be sought in the power relay of the control module by the gearbox.
P1529 Error P1529 reports damage to the automatic transmission control module. Fault 1529 may be due to poor communication or a failure between the engine ECU and the gearbox.
P1586 The combination of 1586 appears as a result of a failure to encode the signals of an automatic or manual gearbox. In some cases, the cause of the problem is the failure of a component of the powertrain control module. Sometimes an error occurs when a poor-quality connection with the “mass” of the output or circuit of automatic recognition of the electronic engine control unit.
P1728 Literally, code P1728 stands for “transmission slip error.” It is recommended to check the operation of the drive of the transmission unit, as well as the device control unit.
P1766 This code appears if the engine does not receive information and requests from the transmission to reduce torque at the time of gear shifting. Due to this problem, jerks and jerks are possible when turning on the speed. It is required to check all the connectors connected to the gearbox control unit.
Decoding of HYUNDAI 2-digit codes Fault Codes
10 This code on Hyundai cars indicates an increased pulse recorded in the circuit of the mass air flow controller
13 Damage to the air pressure controller
16 Impulse coming from the air flow pressure regulator is out of range
19 Input pulse on the flowmeter supply wire is too low
20 Malfunction of the climate control system, possible causes of failure:
– air conditioning relay breakdown;
– clogged nozzles through which the coolant circulates;
– leakage or damage to one of the mains of the air conditioning system;
– malfunction of the climate control unit;
– failure of the compressor device or its incorrect operation.
22 Increased signal on the line of the air pressure sensor
25 Failure or poor connection of the intake air temperature controller
28 The inlet from the intake temperature sensor is out of range
31 Low signal detected on the intake temperature sensor line
37 Faulty antifreeze temperature controller
40 The coolant temperature sensor sends an incorrect signal to the engine control unit
49 Damage to the throttle position controller A
61 Antifreeze temperature too low for closed loop control of the cooling system
82 Faulty second oxygen controller installed in the first engine bank
97 Failure of the heating component of the second oxygen regulator located in the first bank.
Hyundai OBD-II Trouble Codes
P0010 Powertrain Control Module (PCM) failure, Variable valve timing actuator failure, Wiring issue
P0011 Camshaft variable timing solenoid failure, Engine oil level is too low, The engine is not timed correctly, The engine oil does not meet the manufacturer’s requirements, Variable valve timing actuator failure, Worn timing chain
P0012 Camshaft variable timing solenoid failure, Engine oil level is too low, The engine is not timed correctly, The engine oil does not meet the manufacturer’s requirements, Variable valve timing actuator failure, Worn timing chain
P0013 Powertrain Control Module (PCM) failure, Variable valve timing actuator failure, Wiring issue
P0014 Camshaft variable timing solenoid failure, Engine oil level is too low, The engine is not timed correctly, The engine oil does not meet the manufacturer’s requirements, Variable valve timing actuator failure, Worn timing chain
P0101 Large vacuum leaks, Split Intake Air Boot or PCV Hose, Defective intake manifold gaskets, Mass Airflow Sensor (MAF), Mass Air Flow Sensor circuit and or wiring problems, Defective Barometric Pressure Sensor, Dirty or contaminated Mass Air Flow Sensing wire or filament, PCM software needs to be updated
P0102 The Mass Airflow Sensor (MAF) Sensor is unplugged or the wiring is damaged, Loose or corroded electrical terminals in the MAF Sensor circuit, Faulty MAF Sensor
P0113 Defective Intake Air Temperature Sensor, Dirty air filter, Defective Mass Air Flow Sensor, Faulty or corroded Intake Air Temperature Sensor wiring or connections
P0128 Defective Engine Thermostat, Defective Engine Coolant Temperature Sensor, Defective Intake Air Temperature Sensor, Defective Cooling System, Low Engine Coolant, Dirty Engine Coolant causing incorrect Coolant Temperature Sensor readings, Defective/always running Engine Cooling fan(s)
P0135 Defective Oxygen Sensor/Air Fuel Ratio Sensor, defective Oxygen Sensor/Air Fuel Ratio Sensor Heater Circuit, Exhaust System Leak, Intake Air System leak, Low Fuel Pressure, Defective Engine Coolant Temperature Sensor, Defective sensor wiring and/or circuit problem, PCM software needs to be updated, Defective PCM
P0171 Control module software needs to be updated, Vacuum leaks (intake manifold gaskets, vacuum hoses, PCV hoses, etc.), Mass air flow sensor, Plugged fuel filter or weak fuel pump, Plugged or dirty fuel injectors
P0174 PCM software needs to be updated, Vacuum leaks (Intake Manifold Gaskets, vacuum hoses, PCV hoses, etc.), Faulty Mass Airflow (MAF) Sensor, Plugged Fuel Filter or weak Fuel Pump, Plugged or dirty Fuel Injectors
P0200 Defective Fuel Injector, Faulty or corroded Fuel Injector, wiring, and/or connections, Plugged Fuel Injector, Dirt in the Fuel Injector
P0201 Defective Fuel Injector, Faulty or corroded Fuel Injector, wiring, and/or connections, Plugged Fuel Injector, Dirt in the Fuel Injector
P0202 Malfunction of the Fuel Injector, Malfunction of the PCM Fuel Injector driver circuit, Defective wiring/connections in the Fuel Injector wiring harness, Defective Fuel Injector power circuit(s)
P0203 Fuel injector failure, Powertrain Control Module (PCM) failure, Wiring issue
P0205 Fuel injector failure, Powertrain Control Module (PCM) failure, Wiring issue
P0300 Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and/or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)
P0301 Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and/or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)
P0302 Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and/or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)
P0303 Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and/or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)
P0304 Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and/or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)
P0401 Restriction in the EGR passages, usually caused by carbon buildup, The EGR Valve is defective, Lack of proper vacuum or electrical signal to the EGR valve, Malfunctioning EGR Vacuum supply solenoid, Lack of proper EGR system feedback to the computer from the: Manifold Absolute Pressure Sensor (MAP), Differential EGR Pressure Feedback Sensor (DPFE), EGR Valve Position Sensor (EVP), EGR Temperature Sensor
P0420 Inefficient Catalytic Converter(s), Defective Front or Rear Oxygen Sensor(s), Misfiring engines
P0430 Defective Catalytic Converter, Internal engine damage resulting in high oil consumption and/or a leaking Head Gasket has damaged the Catalytic Converter
P0440 Missing fuel cap, Defective or damaged fuel cap, Distorted or damaged Fuel Tank Filler Neck, Torn or punctured Evaporative system hose(s), Defective Fuel Tank Sending Unit gasket or seal, Split or damaged Carbon Canister, Defective Evaporative Vent Valve and/or Evaporative Purge Valve, Defective or damaged fuel tank
P0441 Missing fuel cap, Stuck open or closed purge valve, Defective or damaged fuel cap, Distorted, damaged or cracked Fuel Tank Filler Neck, Torn or punctured Evaporative system hose(s), Defective Fuel Tank Sending Unit gasket or seal, Split or damaged Carbon Canister, Defective Evaporative Vent Valve, Defective or damaged fuel tank
P0442 Defective or damaged fuel cap, Distorted or damaged Fuel Tank Filler Neck, Small tear or puncture in the Evaporative system hose(s) and/or Carbon Canister, Defective Fuel Tank Sending Unit gasket or seal, Small split in a seam of the Carbon Canister, Defective Evaporative Vent Valve and/or Evaporative Purge Valve, Defective or damaged Fuel Tank, Defective Fuel Tank Pressure Sensor, Defective Leak Detection Pump, Slightly loose and/or worn clamps or hardened O-rings anywhere in the EVAP system
P0455 Missing fuel cap, Defective or damaged fuel cap, Distorted or damaged Fuel Tank Filler Neck, Torn or punctured Evaporative system hose(s), Defective Fuel Tank Sending Unit gasket or seal, Split or damaged Carbon Canister, Defective Evaporative Vent Valve and/or Evaporative Purge Valve, Defective or damaged fuel tank, Defective Fuel Tank Pressure Sensor
P0500 Defective Vehicle Speed Sensor, Defective Speedometer, Vehicle Speed Sensor wiring or connector, Communication (CAN) bus problems, Defective transmission or differential Vehicle Speed Sensor drive gear
P0501 Defective Vehicle Speed Sensor, Defective Speedometer, Vehicle Speed Sensor wiring or connector, Communication (CAN) bus problems, Defective transmission or differential Vehicle Speed Sensor drive gear
P0505 Defective Idle Air Control Motor, Intake Manifold Vacuum leaks, Carbon buildup in the Throttle Body air passages
P0506 Defective/sticking Idle Air Control Motor, Intake Manifold Vacuum leaks, Carbon buildup in the Throttle Body air passages, Defective Power Steering Pressure Switch
P0507 Defective/sticking Idle Air Control Motor, Intake Manifold Vacuum leaks, Carbon buildup in the Throttle Body air passages, Defective Coolant Temperature Sensor, Defective Charging System/Alternator, Defective Power Steering Pressure Switch
P0600 Defective PCM (Power Train Control Module), Defective PCM data bus wiring/connections, Defective PCM data bus ground circuit(s), Defective PCM or other control module controlled output devices, Defective CAN bus communication
P0601 Lack of proper voltage to the PCM, Defective PCM memory module, Defective PCM ground circuit(s), Defective PCM controlled output devices
P0602 Powertrain Control Module (PCM) failure, Wiring issue
P0603 Lack of proper voltage to the Keep Alive Memory connection on the PCM, Defective PCM Keep Alive Memory Module (KAM), Defective PCM ground circuit(s), Defective PCM controlled output devices
P0605 Lack of proper voltage and/or ground to the PCM, Defective PCM ROM memory module, Defective PCM ground circuit(s), Defective PCM controlled output devices
P0700 Defective Shift Solenoids, Defective Engine Coolant Temperature Sensor, Defective Valve Body, Dirty transmission fluid that restricts the hydraulic passages
P0705 Defective Transmission Range Sensor (PRNDL input), Defective Transmission Range Sensor (PRNDL input) wiring or connector, Defective Valve Body, Defective manual shift valve linkage, Dirty transmission fluid that restricts the hydraulic passages
P0706 Defective Transmission Range Sensor (PRNDL input), Defective Transmission Range Sensor (PRNDL input) wiring or connector, Defective Valve Body, Defective manual shift valve linkage, Dirty transmission fluid that restricts the hydraulic passages
P0720 Defective Output Speed Sensor, Defective Shift Solenoids, Defective Engine Coolant Temperature Sensor, Defective Valve Body, Dirty transmission fluid that restricts the hydraulic passages, Defective Output Speed Sensor wiring or connector
P0730 Defective Shift Solenoids, Defective Engine Coolant Temperature Sensor, Defective Valve Body, Dirty transmission fluid that restricts the hydraulic passages
P0841 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission fluid pressure sensor failure, Wiring issue
P0842 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission fluid pressure sensor failure, Wiring issue
P0845 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission fluid pressure sensor failure, Wiring issue
P0846 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission fluid pressure sensor failure, Wiring issue
P0847 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission fluid pressure sensor failure, Wiring issue
P0901 Clutch master cylinder failure, Clutch solenoid failure, Transmission Control Module (TCM) failure
P0935 Hydraulic power unit assembly failure, Transmission Control Module (TCM) failure, Wiring issue
P0942 Hydraulic power unit assembly failure, Transmission Control Module (TCM) failure, Wiring issue
P0944 Clogged transmission filter, Transmission fluid level is low, Transmission oil pump failure, Wiring issue
P0961 Transmission shift solenoid failure
P0A08 Inverter/converter assembly failure, Powertrain Control Module (PCM) failure, Wiring issue
P0A0D High voltage safety device failure, Inverter/converter assembly failure, Power management control module failure, Service disconnect plug is not properly connected, Wiring issue
P0A0F Hybrid transaxle assembly failure, Internal engine failure, Power management control module failure
P0A7F Poor connections at the HV battery, A problem with the HV battery, ECU issues
P0A80 High voltage battery assembly failure
P0B22 Battery contactor assembly failure, Battery Energy Control Module (BECM) failure
P0B24 Battery Energy Control Module (BECM) failure, High voltage battery assembly failure, Wiring issue
P0B26 Battery Energy Control Module (BECM) failure, High voltage battery assembly failure, Wiring issue
P0B28 Battery Energy Control Module (BECM) failure, High voltage battery assembly failure, Wiring issue
P0B30 Battery Energy Control Module (BECM) failure, High voltage battery assembly failure, Wiring issue
P0C00 Drive motor generator power inverter control module failure
P0C09 Drive motor generator assembly failure, Drive motor generator power inverter control module failure
P0C11 Coolant system leak, Drive motor generator power inverter control module failure, Engine cooling fan failure, Water pump failure
P0C14 Coolant system leak, Drive motor generator power inverter control module failure, Engine cooling fan failure, Water pump failure
P0C15 Coolant system leak, Drive motor generator power inverter control module failure, Engine cooling fan failure, Water pump failure
P2000 Diesel Particulate Filter (DPF) failure, Intake air leak, Mass Airflow (MAF) sensor is dirty/loss of calibration
PP2002 Diesel Particulate Filter (DPF) failure, Intake air leak, Mass Airflow (MAF) sensor is dirty/loss of calibration
P2004 A failed IMRC actuator, A problem with the intake manifold or linkage, Wiring issues
P2006 Intake manifold runner control actuator failure, Powertrain Control Module (PCM) failure, Restricted vacuum lines
P2101 Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle control motor failure, Wiring issue
P2122 Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle control motor failure, Wiring issue
P2135 Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle Position Sensor (TPS) failure, Wiring issue
P2138 Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle Position Sensor (TPS) failure, Wiring issue
P2181 Engine coolant heater failure, Engine coolant level is too low, Thermostat failure
P2210 NOx sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2213 NOx sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2237 Exhaust leak, Oxygen sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2238 Exhaust leak, Oxygen sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2251 Exhaust leak, Oxygen sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2302 Ignition coil failure, Powertrain Control Module (PCM) failure, Wiring issue
P2303 Ignition coil failure, Powertrain Control Module (PCM) failure, Wiring issue
P2305 Ignition coil failure, Powertrain Control Module (PCM) failure, Wiring issue
P2308 Ignition coil failure, Powertrain Control Module (PCM) failure, Wiring issue
P2310 Ignition coil failure, Powertrain Control Module (PCM) failure, Wiring issue
P2401 Evap leak detection pump failure, Powertrain Control Module (PCM) failure, Wiring issue
P2402 Evap leak detection pump failure, Powertrain Control Module (PCM) failure, Wiring issue
P2422 EVAP vent valve failure, Powertrain Control Module (PCM) failure, Wiring issue
P2431 Air control solenoid failure, Powertrain Control Module (PCM) failure, Secondary Air System pressure sensor failure, Wiring issue
P2432 Air control solenoid failure, Powertrain Control Module (PCM) failure, Secondary Air System pressure sensor failure, Wiring issue
P2500 Alternator failure, Battery failure, Powertrain Control Module (PCM) failure, Wiring issue
P2501 Alternator failure, Battery failure, Powertrain Control Module (PCM) failure, Wiring issue
P2503 Alternator failure, Battery failure, Wiring issue
P2509 Powertrain Control Module (PCM) failure, Powertrain Control Module (PCM) power relay failure, Wiring issue
P250C Oil level sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2601 Coolant Heat Storage (CHS) water pump failure, Coolant Heat Storage (CHS) water pump relay, Powertrain Control Module (PCM) failure, Wiring issue
P2607 Intake air heater, Powertrain Control Module (PCM) failure, Wiring issue
P2609 Intake air heater, Powertrain Control Module (PCM) failure, Wiring issue
P2610 An internal PCM problem, A problem with the PCM power or ground circuit
P2614 Broken tone ring, Camshaft Position Sensor (CMP) failure, Powertrain Control Module (PCM) failure, Wiring issue
P2706 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission shift solenoid failure, Wiring issue
P2711 Internal transmission failure, Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission solenoid failure, Wiring issue
P2714 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission shift solenoid failure, Wiring issue
P2716 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission shift solenoid failure, Wiring issue
P2723 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission shift solenoid failure, Wiring issue
P2803 Powertrain Control Module (PCM) failure, Transmission Control Module (TCM) failure, Transmission range sensor failure, Wiring issue
P2806 Powertrain Control Module (PCM) failure, Transmission Control Module (TCM) failure, Transmission range sensor failure, Transmission range sensor is out of adjustment, Wiring issue
P2809 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission pressure control solenoid failure, Wiring issue
P2810 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission pressure control solenoid failure, Wiring issue
P2815 Transmission Control Module (TCM) failure, Transmission fluid level is low, Transmission pressure control solenoid failure, Wiring issue
P2A00 Exhaust leak, Oxygen sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2A01 Exhaust leak, Oxygen sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2A03 Exhaust leak, Oxygen sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2A04 Exhaust leak, Oxygen sensor failure, Powertrain Control Module (PCM) failure, Wiring issue
P2BA8 Faulty NOx Sensors, NOx Sensors harness is open or shorted, NOx Sensors circuit poor electrical connection, Fualty Diesel Particulate Filter (DPF)
P3000 Fuel level is too low, High voltage battery assembly failure, High voltage battery is not sufficiently charged
P3100 High voltage powertrain control module failure
P3400 Faulty Cylinder Deactivation System/td>
P3401 Engine oil level is too low, Powertrain Control Module (PCM) failure, Variable valve timing solenoid failure, Wiring issue
B0081 Wiring issues, Control module problems, A problem with the airbag
C0040 A faulty wheel speed sensor, A problem with the wheel speed sensor circuit, Reluctor issues, A problem with the ABS module
U0001 A faulty wheel speed sensor, A problem with the wheel speed sensor circuit, Reluctor issues, A problem with the ABS module
U0073 A faulty control module, A problem with the CAN bus
U0100 A faulty PCM, A problem with the control module circuit, A problem with the CAN bus
U0107 A dead battery, A faulty TAC module, A problem with TAC module circuit, A problem with the CAN bus
U0121 A dead battery, A faulty ABS module, A problem with ABS module circuit, A problem with the CAN bus
JCB Fault Codes List
MAN TGA Fault codes list
MACK Truck Fault Codes List