OBD-11 code |
Fault location |
Probable cause |
PO,P2,UO |
Refer to 080-11 trouble code tables |
– |
P1020 1 |
Variable valve timing control – performance problem |
Wiring, engine oil pressure switch, valve timing control valve, actuator, ECM |
P1020 2 |
Variable valve timing control, bank 1 – performance problem |
Wiring, engine oil pressure switch, valve timing control valve, actuator, ECM |
P1021 1 |
Valve timing control valve – circuit malfunction |
Wiring, valve timing control valve, ECM |
P1021 2 |
Valve timing control valve, bank 1 -circuit malfunction |
Wiring, valve timing control valve, ECM |
P1022 |
Variable valve timing control, bank 2 – performance problem |
Wiring, engine oil pressure switch, valve timing control valve, actuator, ECM |
P1023 |
Valve timing control valve, bank 2 – circuit malfunction |
Wiring, valve timing control valve, ECM |
P1025 |
Valve timing control valve, exhaust – circuit malfunction |
Wiring, connections, valve timing control valve, ECM |
P1100 |
Intake manifold air control actuator position sensor – circuit malfunction |
Wiring, position sensor, actuator, ECM |
P1101 |
Traction control vacuum solenoid – circuit malfunction |
Wiring, vacuum solenoid, ECM |
P1102 |
Traction control vent solenoid -circuit malfunction |
Wiring, vent solenoid, ECM |
P1103 |
Turbocharger (TC) wastegate actuator- malfunction |
Wiring, VAF sensor, ECM |
P1104 |
Turbocharger (TC) wastegate regulating valve – malfunction |
Wiring, TC wastegate regulating valve, ECM |
P1105 |
Fuel pressure regulator control solenoid – malfunction |
Wiring, pressure regulator control solenoid, ECM |
P1115 |
Engine coolant temperature (ECT) sensor/intake air temperature (IAT) sensor/outside air temperature sensor – signal variation |
Wiring, ECT sensor, IAT sensor, outside air temperature sensor, ECM |
P1231 |
Automatic stability control – implausible signal |
Wiring, automatic stability control system fault, ECM |
P1232 |
Throttle control fail safe mode – malfunction |
Wiring, ECM |
P1233 |
Throttle position (TP) sensor A – malfunction |
Wiring, throttle position sensor (TPS), intake
leak, ECM |
P1234 |
Throttle position (TP) sensor B – malfunction |
Wiring, throttle position sensor (TPS), intake leak, ECM |
P1235 |
Mass air flow (MAF) sensor – malfunction |
Wiring, mass air flow (MAF) sensor, ECM |
P1236 |
Accelerator pedal position (APP) sensor B – malfunction |
Wiring, ECM |
P1237 |
Accelerator pedal position (APP) sensor – malfunction |
Wiring, accelerator pedal position (APP)
sensor, ECM |
P1238 |
Mass air flow (MAF) sensor – malfunction |
Wiring, mass air flow (MAF) sensor, ECM |
P1239 |
Crankshaft position (CKP) sensor – range/performance problem |
Wiring, crankshaft position (CKP) sensor, ECM |
P1240 |
Ignition timing error |
ECM |
P1241 |
Torque management system – range/performance problem |
Wiring, throttle actuator control (TAC), intake leak, ECM |
P1242 |
Engine RPM input – range/performance problem |
Wiring, ECM |
P1243 |
Engine control module (ECM) – processor fault |
ECM |
P1244 |
Engine control module (ECM) – RAM error |
ECM |
P1245 |
Engine control module (ECM) – RAM error |
ECM |
P1246 |
Engine control module (ECM) – processor fault |
ECM |
P1300 |
Ignition timing adjustment – circuit malfunction |
Wiring short to ground, ECM |
P1320 |
Ignition timing – cold start emission control |
Coolant thermostat, ECM |
P1400 |
Manifold absolute pressure (MAP) sensor- circuit malfunction |
Wiring, MAP sensor, ECM |
P1443 |
Evaporative emission (EVAP) canister purge system – control valve 2 circuit malfunction |
Wiring, EVAP solenoid 2, ECM |
P1500 |
Generator system – circuit malfunction |
Wiring, generator system, ECM |
P1506 |
Idle air control (lAC) valve – RPM lower than expected |
Wiring, intake system blocked, MAP sensor, lAC valve, fuel pressure, ECM |
P1507 |
Idle air control (lAC) valve – RPM higher than expected |
Wiring, intake air leak, throttle valve sticking, MAP sensor, ECM |
P1530 |
A/C control module – circuit malfunction |
Wiring, AIC control module |
P1540 |
Radiator sensor – signal malfunction |
Wiring, radiator, ECM |
P1541 |
Radiator sensor – signal malfunction |
Wiring, radiator, ECM |
P1543 |
Radiator outlet engine temperature (ECT) – low input |
Wiring, engine coolant radiator, coolant thermostat, engine coolant pump, ECT sensor, ECM |
P1544 |
Radiator outlet engine temperature (ECT) – high input |
Wiring, engine coolant radiator, coolant thermostat, engine coolant pump, ECT sensor, ECM |
P1545 |
Radiator outlet engine temperature (ECT) – signal variation |
Wiring, engine coolant radiator, ECT sensor, ECM |
P1546 |
Radiator outlet engine temperature (ECT) – signal variation |
Wiring, engine coolant radiator, ECT sensor, ECM |
P1547 |
Radiator outlet engine temperature (ECT) – signal variation |
Wiring, engine coolant radiator, ECT sensor, ECM |
P1564 |
Cruise control master switch – malfunction |
Wiring, cruise control master switch, ECM |
P1571 |
Cruise control brake pedal switch – malfunction |
Wiring, cruise control brake pedal switch, ECM |
P1574 |
Engine control module (ECM) – malfunction |
Trouble codes stored, ECM |
P1580 |
Radiator outlet engine temperature (ECT) – communication malfunction |
Wiring, ECT sensor, ECM |
P1593 |
Cruise control system, multi-function input A – circuit stuck |
Wiring, poor connection, multi-function switch, mechanical fault, ECM |
P1600 |
AT to ECM – signal failure |
Wiring, TCM, ECM |
P1601 |
ECM to throttle control unit – communication malfunction |
ECM |
P1602 |
ECM to system LSI – communication malfunction |
ECM |
P1603 3 |
Engine control module (ECM) – battery supply voltage |
Wiring, ECM |
P1603 4 |
Engine control module (ECM) – RAM link error |
ECM |
P1604 |
Engine control module (ECM) – RAM
read/write error |
ECM |
P1607 |
Engine control module (ECM) – shut down timer error |
ECM |
P1610 |
Immobilizer control module – circuit malfunction |
Wiring, immobilizer control module, ECM |
P1676 |
VIN not programmed or mismatch – ECM |
ECM |
P1696 |
Engine control module (ECM) – EEPROM
error |
ECM |
P1697 |
Engine control module (ECM) – EEPROM
error |
ECM |
P1715 |
Automatic transmission speed sensors
A & 8 – malfunction |
Wiring, TCM, ECM |
P1720 |
Vehicle speed sensor (VSS) – circuit malfunction |
Wiring, VSS, ECM |
P1750 |
AT- torque converter/shift control and pressure control solenoid valves – malfunction |
Wiring, torque converter/shift control and pressure control solenoid valves, TCM, ECM |
P1751 |
Automatic transmission – control relay malfunction |
Wiring, control relay, TCM, ECM |
P1791 |
Engine coolant temperature to TCM – signal malfunction |
Wiring, TCM, ECM |
P1795 |
Throttle position (TP) switch to TCM – signal malfunction |
Wiring, TCM, ECM |
U1073 |
CAN data bus – bus off, malfunction detected |
Wiring, ECM |
U1102 |
Antilock brake system (ABS)/traction control system (TCS), CAN data bus- time out |
Wiring, ABS control module, ECM |
U1108 |
Instrumentation control module, CAN data bus – time out |
Wiring, instrumentation control module, ECM |
U1109 |
Multifunction control module, CAN data bus – time out |
Wiring, multifunction control module, ECM |
U1110 |
AIC, CAN data bus – time out |
Wiring, A/C control module, ECM |
U1117 |
Immobilizer control module, CAN data bus – time out |
Wiring, immobilizer control module, ECM |