Caterpillar 320c Excavator CLM Fault codes list

Service technicians have no problem recognising breakdowns and carrying out machine diagnostics, Caterpillar 320c Excavator CLM Fault codes list, plus they are familiar with equipment from a variety of manufacturers.

Caterpillar 320c Fault codes list


Illustration 1 Example Of A Typical Troubleshooting Procedure

(1) Preparations

(2) Description of the problem

(3) Error code on the display

(4) Items that require checking

(5) Probable cause and solution

Illustration 2 Diagram Of Terminology For The Troubleshooting Procedures

(6) Number of the terminal in the connector

(7) Indication of the short circuit

(8) Number of the connector

(9) “M” Male “F” Female

  1. Description (Items that require checking)
  2. Measurement of Voltage

O (A) – (B) : 24 V Voltage is measured at the later terminal. For example, the red test pin + is connected to terminal “A” and the black test pin – is connected to terminal “B”.

  1. Meaning of Symbols
  2. The following list describes the meaning of specific symbols:
  • “C-ground” : Ground terminal for the chassis
  • “P-ground” : Ground terminal for the platform
  • “R-ground” : Ground terminal for the relay panel
  • “Cab-ground” : Ground terminal for the cab
  1. Preliminary Check
  2. Connector

Check the connection of the connector before a troubleshooting procedure is performed. Inspect the connector for moisture. Moisture in a connector can cause a poor connection. Ensure that the connectors are mating correctly. Ensure that the pins in the connector are secure.

  1. Continuity

Ensure that continuity is present between the following items:

  • “C-ground” – “P-ground”
  • “C-ground” – “R-ground”
  • “P-ground” – “Cab-ground”

Turn the disconnect switch to the OFF position before you perform the continuity checks. The power is OFF in order to prevent damage to the tester and the circuit.

  1. Preparation
  2. Turn the key start switch to the OFF
  3. The hydraulic control lever is in the LOCKED
  4. Ensure that the controller, the harnesses and the connectors are

Note: Ensure that disconnected wires do not contact the machine in order to avoid damage to electrical components when power is applied.

Cat 320B excavator partial fault code

error code Fault description
E0 No Fault
E1 Engine oil pressure is too low
E2 Engine water temperature is too high
E3 Hydraulic oil temperature is too high
E4 Battery voltage is too high
E5 Generator Por W contact disconnected
E6 The speed sensor is not installed correctly or the circuit is open
E7 Engine speed is abnormal
E9 Throttle motor feedback voltage is too low
El0 Throttle feedback sensor circuit shorts or opens the power supply
E11 Throttle feedback sensor shorted to ground
E12 Throttle feedback sensor voltage is unstable
E13 Throttle motor circuit shorted to ground
E14 The throttle motor does not rotate or the motor circuit is shorted to the power supply
E15 Throttle reserve switch in standby position or throttle motor circuit open
E16 Proportional pressure reducing valve shorted to ground
E17 Proportional pressure reducing valve circuit shorts the power supply
E18 Proportional pressure reducing valve circuit open circuit
E25 Water temperature sensor shorted to ground
E27 Hydraulic oil temperature sensor shorted to ground
E31 The engine speed signal received by the controller is different from the 10 set values of the throttle disc.
E32 The difference between the throttle disc set value and the actual speed exceeds lOOr/min
E33 Data output circuit shorts the power supply
E34 Throttle motor action lags behind throttle disc 2.5s
E36 The monitor reads the signal from the controller for more than Is
E37 Monitor RAM is not working properly
E38 The controller gets an error signal from the monitor
E39 The controller itself generates an error signal
E40 Controller memory error
E41 The controller does not match the mechanical model
E48 Engine stop

Cat 320B excavator partial fault code

error
code
Fault description
1301 Engine oil pressure is too low
1302 Engine coolant temperature is too high
1303 Hydraulic oil temperature is too high
1304 Intake filter plug
1305 Abnormal battery voltage
2201 Governor actuator feedback sensor connected to battery voltage is open or shorted
2202 Governor actuator feedback sensor shorted to body ground
2301 Governor actuator feedback signal is unstable
2302 Governor actuator feedback signal is biased
2303 Governor actuator does not move
2304 Calibration data error
3201 Monitor RAM is abnormal
4101 Too much power to the controller (43 volts)
4102 PRV current is too large
4103 PRV open circuit
4104 Monitor power supply (digital output) over current
4105 Overcurrent in digital output (ditch solenoid valve)
4106 Overcurrent in digital output (fine tuning control solenoid valve)
4107 Overcurrent in digital output (driving speed change solenoid valve)
4108 Overcurrent in digital output (driving alarm)
4109 Spare solenoid 1 (digital output) overcurrent
410A Overcurrent in digital output (turntable brake solenoid valve)
410B Spare solenoid 2 (digital output) overcurrent
4201 Abnormal engine speed
4202 Short circuit of engine coolant temperature sensor connected to body ground
4203 Short circuit of hydraulic oil temperature sensor connected to the body ground
4204 Pump delivery pressure PWM sensor shorted to the body ground
4205 Standby PWM sensor 1 connected to the body ground is shorted
4206 Standby PWM sensor 2 connected to the body ground is shorted
4207 Pumping pressure PWM sensor open circuit during power-on
420A Connected to the body ground fuel sensor open circuit
420B The fuel sensor connected to the battery voltage is open or shorted
420C Power supply is too low (less than 23 volts)
420D Power supply is too high (above 32 volts)
420E Engine speed knob is not in one of 10 specified positions
4301 Alternator and speed sensor data does not match 1 (alternator abnormality)
4302 Alternator and speed sensor data does not match 2 (speed sensor error)
4303 Engine stall
A201 Monitor communication is abnormal
A202 The monitor responds to the controller for too long a signal
A203 Communication abnormality in the controller
A20D ADEM communication interrupt

Cat 330C excavator partial fault code

error code Fault description
0001 1# cylinder injector solenoid valve
0002 2# cylinder injector solenoid valve
0003 3# cylinder injector solenoid valve
0004 4# cylinder injector solenoid valve
0005 5# cylinder injector solenoid valve
0006 6# cylinder injector solenoid valve
0041 8V DC power supply
0042 Injector actuation control valve
0091 Throttle position signal
0094 Fuel pressure country sensor
0100 Engine oil pressure sensor
0110 Engine coolant temperature sensor
0164 Injector actuation pressure
0168 System voltage
0172 Intake manifold air temperature
0175 Engine oil temperature sensor
0190 Engine speed sensor
0253 Personality module
0261 Engine timing check
0262 5V sensor DC power supply
0268 Check programmable parameters
0273 Turbocharger outlet pressure sensor
0274 Atmospheric pressure sensor
0286 Oil lamp
0342 Secondary engine speed sensor
0617 Air intake heating relay
1627 Fuel pump relay
0091 Throttle position signal
0096 Fuel level sensor
0110 Engine coolant temperature sensor
0167 generator
0168 Key gate voltage
0190 speed sensor
0248 CAT data line
0286 Engine oil pressure low signal
0374 Rotary brake solenoid valve
0376 Walking warning
0581 Power shift proportional pressure reducing valve
0586 Engine speed disc switch
0587 Regulator transmission feedback signal
0590 Engine controller
0598 Walking speed solenoid valve
0600 Hydraulic oil temperature sensor
1161 Pump pressure
1162 Pump pressure
1524 Negative flow control proportional solenoid valve
1525 Straight line walking solenoid valve
1590 Negative flow control proportional solenoid valve
FMI fault code FMI fault description
0 The data is correct but above the normal range
1 The data is correct but below the normal range
2 Data is unstable, intermittent or incorrect
3 The voltage is higher than normal or suddenly high
4 Voltage is lower than normal or suddenly low
5 Current is lower than normal or open circuit
6 Current is higher than normal or short circuit
7 The machine system did not respond correctly
8 Abnormal frequency, pulse or period
9 Abnormal update
10 Abnormal rate of change
11 Failure mode cannot be confirmed
12 Bad device or component
13 Out of calibration range
14-31 Reserved

Cat 320D excavator partial fault code e Only

error
code
Fault description
00 The data is valid but higher than the normal running value
01 Data is valid but below normal operating value
02 Signal error (data is unstable, intermittent or error)
03 Voltage is higher than normal
04 Voltage is lower than normal
05 Current is lower than normal
06 Current is higher than normal
07 Mechanical system reaction is not normal
08 Signal anomaly (frequency, pulse width or period anomaly)
9 Update exception
10 Abnormal rate of change
11 Failure to identify failure mode
12 Equipment or component damage
13 Calibration failed
14 Parallel metering fault
15 Parallel metering fault
16 Parallel metering is invalid
17 Module (program) did not respond
18 Sensor power failure
19 Receive network data error
20 Parallel metering fault
0041 8V power supply
0096 Fuel level sensor
0110 Engine coolant temperature sensor
0167 Alternator
0168 System power
0190 Engine speed sensor
0246 CAN data line
0247 SAE J1939 data cable
0248 Caterpillar data line
0254 Electronic Control Module (ECM)
0262 Sv sensor power supply
0271 alarm system
0291 Engine cooling fan solenoid valve
0362 Engine variable speed fan control solenoid valve
0374 Rotary brake solenoid valve
0485 Engine fan recovery solenoid valve
0544 Engine cooling fan shift solenoid valve
0581 Power shift pressure proportional solenoid valve
0586 Engine throttle disc
0588 Instrument display system
0590 ECM
0598 Walking speed switching solenoid valve
0600 Hydraulic oil temperature sensor
0735 Heavy duty lift solenoid valve
1129 Right accessory pedal sensor
1130 Left accessory pedal sensor
1160 Hydraulic lock solenoid valve
1178 Mechanical overload warning pressure sensor
1522 No. 2 relief valve check valve solenoid valve
1523 No. 1 relief valve check valve solenoid valve
1525 Straight line walking solenoid valve
1590 Main hydraulic pump output limit pressure solenoid valve
1593 No. 1 accessory valve extends pressure solenoid valve
1594 Auxiliary valve No. 2 extends pressure solenoid valve
1595 Auxiliary valve pressure solenoid valve No. 3
1596 No. 1 accessory valve retracts pressure solenoid valve
1597 No. 2 accessory valve retracting pressure solenoid valve
1598 Auxiliary valve No. 3 cancels the pressure solenoid valve
1609 F2 mode valve loop feedback pressure sensor
1657 Left joystick top button
1658 Right joystick top button
1665 No. 1 adjustable pressure relief valve solenoid valve
1666 No. 2 adjustable pressure relief valve solenoid valve
1931 Optional loop
2265 Pump output pressure sensor
2266 Pump output pressure sensor 2
2275 Breaker oil return route control (straight through tank) solenoid valve
2280 Walking alarm relay
2300 switch panel

Cat C9 partial fault code

error code Fault description
112 Accelerator pedal 1 failure
113 Accelerator pedal and brake pedal signals are not trusted
116 Clutch signal failure
117 Brake pedal failure
119 15 terminal failure
11C Fuel filter water reservoir
211 Vehicle speed sensor failure
215 Cruise control button irreversible failure
125 Main relay 2 failed
126 Battery voltage failure
127 Engine brake failure
128 Main relay 1 is shorted to the battery
129 Main relay 3 failure
12A Engine brake (main relay 4) failure
12B Air heater 1 Power Stage failure
12E Preheating control system failure
225 Main relay failure (interrupted after shutdown)
228 Main relay 1 is shorted to ground
131 Coolant temperature sensor
132 Coolant temperature sensor dynamic failure
133 B intake air temperature sensor
134 Intake pressure sensor
135 Fuel temperature sensor
136 Common rail pressure sensor
137 Common rail pressure limiting valve
138 Oil Pressure Sensor
13A Oil temperature sensor
232 Coolant temperature (monitoring)
236 Common rail pressure sensor deviation monitoring
238 Oil pressure is too low
23A Oil temperature is too high
141 Crankshaft speed sensor
142 Camshaft sensor signal only
143 Camshaft sensor
144 Camshaft sensor and crankshaft sensor signal deviation exceeds limit
149 Fuel filter heater failure
14A Engine cabin start button issuance
14D Tip: Engine overspeed protection
24A Engine cabin stop button issuance
152 Common rail pressure positive deviation is too high and fuel flow set value is too high
153 Common rail pressure negative deviation too high (minimum flow)
154 Common rail pressure is below the minimum limit
155 Common rail pressure is greater than the maximum limit
156 Common rail fuel pressure drop rate is too high
157 Common speed metering valve is not true when S is overspeed
158 Common rail metering device fuel flow set point is too low
159 Common rail oil pump metering valve Power Stage failure
259 Common rail metering valve positive short circuit
359 Common rail metering valve negative short circuit
161 1st cylinder injector failure
162 2nd cylinder injector failure
163 3rd cylinder injector failure
164 4th cylinder injector failure
165 The fifth cylinder injector malfunction
166 6th cylinder injector failure
167 The first cylinder injector is open
168 The second cylinder injector is open
169 3rd cylinder injector open circuit
16A 4th cylinder injector open circuit
16B 5th cylinder injector open circuit
16C 6th cylinder injector open circuit
16E The minimum number of injection cylinders has not been reached
171 Injector cable 1 failure
172 I injector cable 2 failure
17C Injector control unit of ECU: CY33X(1) fault
27C Injector control unit of ECU: CY33X(2) fault
19E Limit torque value to reduce smoke
29D Because of the negative torque, the torque limit is generated.
39E Because the booster protection creates a torque limit
49E Torque is limited due to engine protection
69E Torque is limited due to the fuel injection system’s fuel injection limit
The diagnosis tool Caterpillar 320c Excavator CLM Fault codes list for trucks provides different possibilities such as information on the use and location of the connectors, detection and description of errors, activation of the fan, compression test and other components, system data information and more.