Toyota Tacoma Pickup Diagnostic Trouble Code Chart

Service technicians have no problem recognising breakdowns and carrying out machine diagnostics, Toyota Tacoma Pickup Diagnostic Trouble Code Chart, plus they are familiar with equipment from a variety of manufacturers.

The Toyota Tacoma is a pickup truck manufactured by the Japanese automobile manufacturer Toyota since 1995. The first-generation Tacoma, model years 1995 through 2004, was classified as a compact pickup. The second generation, model years 2005 through 2015, as well as the third generation, in production since 2015, are classified as mid-sized pickups. The Tacoma was Motor Trends Truck of the Year for 2005. As of 2015, the Toyota Tacoma is sold in the United States, Canada, Mexico, Costa Rica, Bolivia, Bermuda, and the French territory of New Caledonia. The name “Tacoma” was derived from the Coast Salish peoples’ name for Mount Rainier in Washington.

Factors such as instrument type may cause readings to differ slightly from stated values. If any DTCs are displayed during a check mode DTC check, check the circuit for the DTCs listed in the table below. For details of each DTC, refer to the page indicated.

*: MIL flashes when a catalyst damaged misfire is detected.

DTC No. Detection Item Trouble Areas MIL Memory See page
P0010 Camshaft Position “A” Actuator Circuit (Bank 1) – Open or short in OCV (bank 1) circuit

– ECM

Comes on DTC stored ES-66
P0011 Camshaft Position “A” – Timing Over-Advanced or System Performance (Bank 1) – Valve timing

– Oil control valve (OCV)

– OCV filter

– Camshaft timing gear assembly

– ECM

Comes on DTC stored ES-71
P0012 Camshaft Position “A” – Timing Over-Retarded (Bank 1) – Same as DTC P0011 Comes on DTC stored ES-71
P0016 Crankshaft Position -Camshaft Position Correlation (Bank 1 Sensor A) – Mechanical system (Timing chain has jumped tooth or chain stretched)

– ECM

Comes on DTC stored ES-76
P0018 Crankshaft Position -Camshaft Position Correlation (Bank 2 Sensor A) – Same as DTC P0016 Comes on DTC stored ES-76
P0020 Camshaft Position “A” Actuator Circuit (Bank 2) – Open or short in OCV (bank 2) circuit

– ECM

Comes on DTC stored ES-66
P0021 Camshaft Position “A” – Timing Over-Advanced or System Performance (Bank 2) – Same as DTC P0011 Comes on DTC stored ES-71
P0022 Camshaft Position “A” – Timing Over-Retarded (Bank 2) – Same as DTC P0011 Comes on DTC stored ES-71
P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1) – Open in A/F sensor heater circuit

– A/F sensor heater

– A/F sensor heater relay

– ECM

Comes on DTC stored ES-78
P0032 Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1) – Short in A/F sensor heater circuit

– A/F sensor heater

– A/F sensor heater relay

– ECM

Comes on DTC stored ES-78
P0037 Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2) – Open in HO2 sensor heater circuit

– HO2 sensor heater

– EFI relay

– ECM

Comes on DTC stored ES-83
DTC No. Detection Item Trouble Areas MIL Memory See page
P0038 Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2) – Short in HO2 sensor heater circuit

– HO2 sensor heater

– EFI relay

– ECM

Comes on DTC stored ES-83
P0051 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1) – Same as DTC P0031 Comes on DTC stored ES-78
P0052 Oxygen (A/F) Sensor Heater Control Circuit High (Bank 2 Sensor 1) – Same as DTC P0032 Comes on DTC stored ES-78
P0057 Oxygen Sensor Heater Control Circuit Low (Bank 2 Sensor 2) – Same as DTC P0037 Comes on DTC stored ES-83
P0058 Oxygen Sensor Heater Control Circuit High (Bank 2 Sensor 2) – Same as DTC P0038 Comes on DTC stored ES-83
P0100 Mass or Volume Air Flow Circuit – Open or short in MAF meter circuit

– MAF meter

– ECM

Comes on DTC stored ES-89
P0101 Mass or Volume Air Flow Circuit Range / Performance Problem – MAF meter Comes on DTC stored ES-96
P0102 Mass or Volume Air Flow Circuit Low Input – Open in MAF meter circuit

– Short in ground circuit

– MAF meter

– ECM

Comes on DTC stored ES-89
P0103 Mass or Volume Air Flow Circuit High Input – Short in MAF meter circuit (+B circuit)

– MAF meter

– ECM

Comes on DTC stored ES-89
Temperature Circuit – Open or short in IAT sensor circuit

– IAT sensor (built into MAF meter)

– ECM

Comes on DTC stored ES-98
Temperature Circuit Low Input – Short in IAT sensor circuit

– IAT sensor (built into MAF meter)

– ECM

Comes on DTC stored ES-98
Temperature Circuit High Input – Open in IAT sensor circuit

– IAT sensor (built into MAF meter)

– ECM

Comes on DTC stored ES-98
P0115 Engine Coolant Temperature Circuit – Open or short in ECT sensor circuit

– ECT sensor

– ECM

Comes on DTC stored ES-104
P0116 Engine Coolant Temperature Circuit Range / Performance Problem – ECT sensor Comes on DTC stored ES-109
ES  
DTC No. Detection Item Trouble Areas MIL Memory See page
P0117 Engine Coolant Temperature Circuit Low Input – Short in ECT sensor circuit

– ECT sensor

– ECM

Comes on DTC stored ES-104
P0118 Engine Coolant Temperature Circuit High Input – Open in ECT sensor circuit

– ECT sensor

– ECM

Comes on DTC stored ES-104
P0120 Throttle / Pedal Position Sensor / Switch “A” Circuit – Throttle Position (TP) sensor (built into throttle body)

– ECM

Comes on DTC stored ES-112
P0121 Throttle / Pedal Position Sensor / Switch “A” Circuit Range / Performance Problem – TP sensor (built into throttle body) Comes on DTC stored ES-120
P0122 Throttle / Pedal Position Sensor / Switch “A” Circuit Low Input – TP sensor (built into throttle body)

– Short in VTA1 circuit

– Open in VC circuit

– ECM

Comes on DTC stored ES-112
P0123 Throttle / Pedal Position Sensor / Switch “A” Circuit High Input – TP sensor (built into throttle body)

– Open in VTA1 circuit

– Open in E2 circuit

– Short between VC and VTA1 circuits

– ECM

Comes on DTC stored ES-112
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control – Cooling system

– Engine coolant temperature sensor

– Thermostat

Comes on DTC stored ES-122
P0128 Coolant Thermostat (Coolant

Temperature Below Thermostat Regulating Temperature)

– Thermostat

– Cooling system

– ECT sensor

– ECM

Comes on DTC stored ES-125
P0136 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2) – Open or short in HO2 sensor (bank 1, 2 sensor 2) circuit

– HO2 sensor heater (bank 1, 2 sensor 2)

– Air-Fuel Ratio (A/F) sensor (bank 1, 2 sensor 1)

– EFI relay

– Gas leakage from exhaust system

Comes on DTC stored ES-128
P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2) – Open in HO2 sensor (bank 1, 2 sensor 2) circuit

– HO2 sensor heater (bank 1, 2 sensor 2)

– EFI relay

– Gas leakage from exhaust system

Comes on DTC stored ES-128
DTC No. Detection Item Trouble Areas MIL Memory See page
P0138 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2) – Short in HO2 sensor (bank 1, 2 sensor 2) circuit

– ECM internal circuit malfunction

Comes on DTC stored ES-128
P0156 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2) – Same as DTC P0136 Comes on DTC stored ES-128
P0157 Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2) – Same as DTC P0137 Comes on DTC stored ES-128
P0158 Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2) – Same as DTC P0138 Comes on DTC stored ES-128
P0171 System Too Lean (Bank 1) – Air induction system

– Injector blockage

– Mass Air Flow (MAF) meter

– Engine Coolant Temperature (ECT) sensor

– Fuel pressure

– Gas leakage from exhaust system

– Open or short in A/F sensor (bank 1, 2 sensor 1) circuit

– A/F sensor heater relay

– A/F sensor heater and A/F sensor heater relay circuits

– PCV hose connections

– PCV valve and hose

– ECM

Comes on DTC stored ES-146
P0172 System Too Rich (Bank 1) – Injector leakage or blockage

– MAF meter

– ECT sensor

– Ignition system

– Fuel pressure

– Gas leakage from exhaust system

– Open or short in A/F sensor (bank 1, 2 sensor 1) circuit

– A/F sensor heater relay

– A/F sensor heater and A/F sensor heater relay circuits

– ECM

Comes on DTC stored ES-146
P0174 System Too Lean (Bank 2) – Same as DTC P0171 Comes on DTC stored ES-146
ES  
DTC No. Detection Item Trouble Areas MIL Memory See page
P0175 System Too Rich (Bank 2) – Same as DTC P0172 Comes on DTC stored ES-146
P0220 Throttle / Pedal Position Sensor / Switch “B” Circuit – TP sensor (built into throttle body)

– ECM

Comes on DTC stored ES-112
P0222 Throttle / Pedal Position Sensor / Switch “B” Circuit Low Input – TP sensor (built into throttle body)

– Short in VTA2 circuit

– Open in VC circuit

– ECM

Comes on DTC stored ES-112
P0223 Throttle / Pedal Position Sensor / Switch “B” Circuit High Input – TP sensor (built into throttle body)

– Open in VTA2 circuit

– Open in E2 circuit

– Short between VC and VTA2 circuits

– ECM

Comes on DTC stored ES-112
P0230 Fuel Pump Primary Circuit – Open or short in fuel pump relay circuit

– Fuel pump relay

– ECM

DTC stored ES-158
P0300 Random / Multiple Cylinder Misfire Detected – Open or short in engine wire harness

– Connector connection

– Vacuum hose connection

– Ignition system

– Injector

– Fuel pressure

– Mass Air Flow (MAF) meter

– Engine Coolant Temperature (ECT) sensor

– Compression pressure

– Valve clearance

– Valve timing

– PCV hose connections

– PCV valve and hose

– ECM

Comes on/ Blinks DTC stored ES-163
P0301 Cylinder 1 Misfire Detected – Same as DTC P0300 Comes on/ Blinks DTC stored ES-163
P0302 Cylinder 2 Misfire Detected – Same as DTC P0300 Comes on/ Blinks DTC stored ES-163
P0303 Cylinder 3 Misfire Detected – Same as DTC P0300 Comes on/ Blinks DTC stored ES-163
P0304 Cylinder 4 Misfire Detected – Same as DTC P0300 Comes on/ Blinks DTC stored ES-163
P0305 Cylinder 5 Misfire Detected – Same as DTC P0300 Comes on/ Blinks DTC stored ES-163
P0306 Cylinder 6 Misfire Detected – Same as DTC P0300 Comes on/ Blinks DTC stored ES-163
P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor) – Short in knock sensor 1 or 2 circuit

– Knock sensor 1 or 2

– ECM

Comes on DTC stored ES-176
P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor) – Open in knock sensor 1 or 2 circuit

– Knock sensor 1 or 2

– ECM

Comes on DTC stored ES-176
DTC No. Detection Item Trouble Areas MIL Memory See page
P0332 Knock Sensor 2 Circuit Low Input (Bank 2) – Same as DTC P0327 Comes on DTC stored ES-176
P0333 Knock Sensor 2 Circuit High Input (Bank 2) – Same as DTC P0328 Comes on DTC stored ES-176
P0335 Crankshaft Position Sensor “A” Circuit – Open or short in CKP sensor circuit

– CKP sensor

– Sensor plate (CKP sensor plate)

– ECM

Comes on DTC stored ES-182
P0339 Crankshaft Position Sensor “A” Circuit Intermittent – Same as DTC P0335 DTC stored ES-182
P0340 Camshaft Position Sensor “A” Circuit (Bank 1 or Single Sensor) – Open or short in VVT sensor circuit

– VVT sensor

– Camshaft timing pulley

– Jumped tooth of timing chain

– ECM

Comes on DTC stored ES-187
P0342 Camshaft Position Sensor “A” Circuit Low Input (Bank 1 or Single Sensor) – Same as DTC P0340 Comes on DTC stored ES-187
P0343 Camshaft Position Sensor “A” Circuit High Input (Bank 1 or Single Sensor) – Same as DTC P0340 Comes on DTC stored ES-187
P0345 Camshaft Position Sensor “A” Circuit (Bank 2) – Same as DTC P0340 Comes on DTC stored ES-187
P0347 Camshaft Position Sensor “A” Circuit Low Input (Bank 2) – Same as DTC P0340 Comes on DTC stored ES-187
P0348 Camshaft Position Sensor “A” Circuit High Input (Bank 2) – Same as DTC P0340 Comes on DTC stored ES-187
P0351 Ignition Coil “A” Primary / Secondary Circuit – Ignition system

– Open or short in IGF1 or IGT circuit (1 to 6) between ignition coil with igniter and ECM

– No. 1 to No. 6 ignition coils with igniters

– ECM

Comes on DTC stored ES-192
P0352 Ignition Coil “B” Primary / Secondary Circuit – Same as DTC P0351 Comes on DTC stored ES-192
P0353 Ignition Coil “C” Primary / Secondary Circuit – Same as DTC P0351 Comes on DTC stored ES-192
P0354 Ignition Coil “D” Primary / Secondary Circuit – Same as DTC P0351 Comes on DTC stored ES-192
P0355 Ignition Coil “E” Primary / Secondary Circuit – Same as DTC P0351 Comes on DTC stored ES-192
ES  
DTC No. Detection Item Trouble Areas MIL Memory See page
P0356 Ignition Coil “F” Primary / Secondary Circuit – Same as DTC P0351 Comes on DTC stored ES-192
P0420 Catalyst System Efficiency Below Threshold (Bank 1) – Gas leakage from exhaust system

– HO2 sensor (bank 1 sensor 2)

– Exhaust manifold (TWC)

Comes on DTC stored ES-203
P0430 Catalyst System Efficiency Below Threshold (Bank 2) – Gas leakage from exhaust system

– HO2 sensor (bank 2 sensor 2)

– Exhaust manifold (TWC)

Comes on DTC stored ES-203
P043E Evaporative Emission System Reference Orifice Clog Up – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

– Leakage from EVAP system

Comes on DTC stored ES-210
P043F Evaporative Emission System Reference Orifice High Flow – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

Leakage from EVAP system

Comes on DTC stored ES-210
P0441 Evaporative Emission Control System Incorrect Purge Flow – Purge VSV

– Connector/wire harness (Purge VSV

– ECM

– Canister pump medule

– Leakage from EVAP system

– Leakage from EVAP line (Purge VSV -Intake manifold)

Comes on DTC stored ES-216
P0450 Evaporative Emission Control System Pressure Sensor / Switch – Canister pump module

– ECM

Comes on DTC stored ES-223
P0451 Evaporative Emission Control System Pressure Sensor Range / Performance – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

Comes on DTC stored ES-223
P0452 Evaporative Emission Control System Pressure Sensor / Switch Low Input – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

Comes on DTC stored ES-223
DTC No. Detection Item Trouble Areas MIL Memory See page
P0453 Evaporative Emission Control System Pressure Sensor / Switch High Input – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

Comes on DTC stored ES-223
P0455 Evaporative Emission Control System Leak Detected (Gross Leak) – Leakage from EVAP line (Canister – Fuel tank)

– Leakage from EVAP line (Purge VSV -Canister)

– Canister pump module

– Leakage from fuel tank

– Leakage from canister

Comes on DTC stored ES-233
P0456 Evaporative Emission Control System Leak Detected (Very Small Leak) – Same as DTC P0455 Comes on DTC stored ES-233
P0500 Vehicle Speed Sensor “A” – Open or short in speed signal circuit

– Combination meter

– ECM

– Skid control ECU

Comes on DTC stored ES-238
P0504 Brake Switch “A” / “B” Correlation – Short in stop light switch signal circuit

– STOP fuse

– Stop light switch

– ECM

DTC stored ES-242
P0505 Idle Control System Malfunction – ETCS

– Air induction system

– PCV hose connections

– ECM

Comes on DTC stored ES-246
P050A Cold Start Idle Air Control System Performance – Throttle body assembly

– Mass air flow meter

– Air induction system

– PCV hose connections

– VVT system

– Air cleaner filter element

– ECM

Comes on DTC stored ES-250
P050B Cold Start Ignition Timing Performance – Same as DTC P050A Comes on DTC stored ES-250
P0560 System Voltage – Open in back up power source circuit

– EFI fuse

– ECM

Comes on DTC stored ES-257
P0604 Internal Control Module Random Access Memory (RAM) Error – ECM Comes on DTC stored ES-261
P0606 ECM/PCM Processor – ECM Comes on DTC stored ES-261
P0607 Control Module Performance – ECM Comes on DTC stored ES-261
ES  
DTC No. Detection Item Trouble Areas MIL Memory See page
P0617 Starter Relay Circuit High – Park/Neutral Position (PNP) switch (For automatic transmission)

– Clutch start switch (For manual transmission)

– Starter relay circuit

– Ignition switch

– ECM

Comes on DTC stored ES-263
P0630 VIN not Programmed or Mismatch – ECM / PCM – ECM Comes on DTC stored ES-270
P0657 Actuator Supply Voltage Circuit / Open – ECM Comes on DTC stored ES-261
P0724 Brake Switch “B” Circuit High – Short in stop light switch signal circuit

– Stop light switch

– ECM

Comes on DTC stored ES-272
P1500 AC Inverter Malfunction – Open or short in speed signal circuit

– Short between idle-up signal and +B circuits

– Voltage Inverter

– ECM

Comes on DTC stored ES-275
P2102 Throttle Actuator Control Motor Circuit Low – Open in throttle actuator circuit

– Throttle actuator

– ECM

Comes on DTC stored ES-279
P2103 Throttle Actuator Control Motor Circuit High – Short in throttle actuator circuit

– Throttle actuator

– Throttle valve

– Throttle body assembly

– ECM

Comes on DTC stored ES-279
P2111 Throttle Actuator Control System -Stuck Open – Throttle actuator

– Throttle body assembly

– Throttle valve

Comes on DTC stored ES-283
P2112 Throttle Actuator Control System -Stuck Closed – Same as DTC P2111 Comes on DTC stored ES-283
P2118 Throttle Actuator Control Motor Current Range / Performance – Open in ETCS power source circuit

– ETCS fuse

– ECM

Comes on DTC stored ES-286
P2119 Throttle Actuator Control Throttle Body Range / Performance – ETCS

– ECM

Comes on DTC stored ES-290
P2120 Throttle / Pedal Position Sensor / Switch “D” Circuit – Accelerator Pedal Position (APP) sensor

– ECM

Comes on DTC stored ES-293
P2121 Throttle / Pedal Position Sensor / Switch “D” Circuit Range / Performance – Accelerator position sensor

– ECM

Comes on DTC stored ES-301
DTC No. Detection Item Trouble Areas MIL Memory See page
P2122 Throttle / Pedal Position Sensor / Switch “D” Circuit Low Input – APP sensor

– Open in VCP1 circuit

– Open or ground short in VPA circuit

– ECM

Comes on DTC stored ES-293
P2123 Throttle / Pedal Position Sensor / Switch “D” Circuit High Input – APP sensor

– Open in EPA circuit

– ECM

Comes on DTC stored ES-293
P2125 Throttle / Pedal Position Sensor / Switch “E” Circuit – APP sensor

– ECM

Comes on DTC stored ES-293
P2127 Throttle / Pedal Position Sensor / Switch “E” Circuit Low Input – APP sensor

– Open in VCP2 circuit

– Open or ground short in VPA2 circuit

– ECM

Comes on DTC stored ES-293
P2128 Throttle / Pedal Position Sensor / Switch “E” Circuit High Input – APP sensor

– Open in EPA2 circuit

– ECM

Comes on DTC stored ES-293
P2135 Throttle / Pedal Position Sensor / Switch “A” / “B” Voltage Correlation – Short between VTA1 and VTA2 circuits

– TP sensor (built into throttle body)

– ECM

Comes on DTC stored ES-112
P2138 Throttle / Pedal Position Sensor / Switch “D” / “E” Voltage Correlation – Short between VPA and VPA2 circuits

– APP sensor

– ECM

Comes on DTC stored ES-293
P2195 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1) – Open or short in A/F sensor (bank 1, 2 sensor 1) circuit

– A/F sensor heater relay

– A/F sensor heater and relay circuits

– Air induction system

– Fuel pressure

– Injector

– ECM

Comes on DTC stored ES-304
P2196 Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1) – Same as DTC P2195 Comes on DTC stored ES-304
P2197 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 2 Sensor 1) – Same as DTC P2195 Comes on DTC stored ES-304
P2198 Oxygen (A/F) Sensor Signal Stuck Rich (Bank 2 Sensor 1) – Same as DTC P2195 Comes on DTC stored ES-304
ES  
DTC No. Detection Item Trouble Areas MIL Memory See page
P2238 Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1) – Open or short in A/F sensor (bank 1, 2 sensor 1) circuit

– A/F sensor heater

– A/F sensor heater relay

– A/F sensor heater and relay circuits

– ECM

Comes on DTC stored ES-322
P2239 Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1) – Same as DTC P2238 Comes on DTC stored ES-322
P2241 Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 2 Sensor 1) – Same as DTC P2238 Comes on DTC stored ES-322
P2242 Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 2 Sensor 1) – Same as DTC P2238 Comes on DTC stored ES-322
P2252 Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1) – Same as DTC P2238 Comes on DTC stored ES-322
P2253 Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1) – Same as DTC P2238 Comes on DTC stored ES-322
P2255 Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 2 Sensor 1) – Same as DTC P2241 Comes on DTC stored ES-322
P2256 Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 2 Sensor 1) – Same as DTC P2241 Comes on DTC stored ES-322
P2401 Evaporative Emission System Leak Detection Pump Control Circuit Low – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

– Leakage from EVAP system

Comes on DTC stored ES-328
P2402 Evaporative Emission System Leak Detection Pump Control Circuit High – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

Comes on DTC stored ES-328
P2419 Evaporative Emission System Switching Valve Control Circuit Low – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

Comes on DTC stored ES-334
DTC No. Detection Item Trouble Areas MIL Memory See page
P2420 Evaporative Emission System Switching Valve Control Circuit High – Canister pump module

– Connector/wire harness (Canister pump module – ECM)

– ECM

– Leakage from EVAP system

Comes on DTC stored ES-334
P2610 ECM / PCM Internal Engine Off Timer Performance – ECM Comes on DTC stored ES-340
P2A00 A/F Sensor Circuit Slow Response (Bank 1 Sensor 1) – Open or short in A/F sensor (bank 1, 2 sensor 1) circuit

– A/F sensor

– ECM

Comes on DTC stored ES-342
P2A03 A/F Sensor Circuit Slow Response (Bank 2 Sensor 1) – Same as DTC P2A00 Comes on DTC stored ES-342
The diagnosis tool Toyota Tacoma Pickup Diagnostic Trouble Code Chart 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.