| OBD-11 code | Fault location | Probable cause |
| PO,P2,UO | Refer to OBD-11 trouble code tables | – |
| P1618 | Engine torque control – limit reached/exceeded | Intake air leak, electronic throttle system
(ETS), exhaust blockage, ECM |
| P1100 | Manifold absolute pressure (MAP) sensor – EGR – circuit malfunction | Wiring, MAP sensor |
| P1102 | Manifold absolute pressure (MAP) sensor – EGR mode 3 | Wiring, hoses blocked/leaking, EGR valve, MAP sensor |
| P1103 | Manifold absolute pressure (MAP) sensor – EGR mode 2 | Wiring, hoses blocked/leaking, EGR valve, MAP sensor |
| P1106 | Manifold absolute pressure (MAP) sensor – signal high | Wiring, poor connection, MAP sensor, ECM |
| P1107 | Manifold absolute pressure (MAP) sensor – signal low | Wiring, poor connection, MAP sensor, ECM |
| P1110 | Electronic throttle system (ETS) – malfunction | Wiring, ETS |
| P1111 | Intake air temperature (IAT) sensor- circuit low input/intermittent | Wiring, poor connection, IAT sensor, ECM |
| P1112 | Intake air temperature (IAT) sensor- circuit high input/intermittent | Wiring, poor connection, IAT sensor, ECM |
| P1114 | Engine coolant temperature (ECT) sensor – signal malfunction | Wiring, ECT sensor, TCM, ECM |
| P1115 | Engine coolant temperature (ECT) sensor – signal malfunction | Wiring, ECT sensor, TCM, ECM |
| P1118 | Throttle motor – malfunction | Wiring open/short circuit, throttle motor, ETS |
| P1123 | Long term fuel trim – additive – mixture too rich | H02S, fuel pressure, fuel system, mechanical fault, ECM |
| P1124 | Long term fuel trim -additive – mixture too lean | H02S, fuel pressure, fuel system, mechanical fault, ECM |
| P1127 | Long term fuel trim – system too rich | H02S, fuel pressure, fuel system, mechanical fault, ECM |
| P1128 | Long term fuel trim – system too lean | H02S, fuel pressure, fuel system, mechanical fault, ECM |
| P1134 | Heated oxygen sensor (H02S) 1, bank 1 – slow response | Heating inoperative, H02S |
| P1140 | Engine load monitoring (MAFfrP) -signals not plausible | Wiring, MAF sensor, TP sensor, mechanical fault |
| P1147 | Accelerator pedal position (APP) sensor 1 – circuit malfunction | Wiring, APP sensor |
| P1151. | Accelerator pedal position (APP) sensor 2 – circuit malfunction | Wiring, APP sensor |
| P1152 | Accelerator pedal position (APP) sensor 2 – low voltage | Wiring short to ground, APP sensor |
| P1153 | Accelerator pedal position (APP) sensor 2 – high voltage | Wiring short to positive, APP sensor |
| P1154 | Heated oxygen sensor (H02S) 1, bank 2 – slow response | Heating inoperative, H02S |
| P1155 | Electronic throttle system (ETS) – malfunction | Wiring, ETS limp-home valve |
| P1159 | Intake manifold air control, target position – malfunction | Unable to get target value |
| P1166 | Heated oxygen sensor (H02S) 1, bank 1 – control limit reached | Wiring open circuit, fuel pressure, exhaust system leak, EVAP system, H02S |
| P1167 | Heated oxygen sensor (H02S) 1, bank 2- control limit reached | Wiring open circuit, fuel pressure, exhaust system leak, EVAP system, H02S |
| P1168 | Heated oxygen sensor (H02S) 2, bank 1, heater control – circuit malfunction | Wiring, H02S |
| P1169 | Heated oxygen sensor (H02S) 2, bank 2, heater control – circuit malfunction | Wiring, H02S |
| P1171 | Electronic throttle system (ETS), WOT – malfunction | ETS stuck open, ECM |
| P1172 | ETS throttle motor – abnormal current | Wiring, throttle motor |
| P1173 | ETS throttle motor – abnormal voltage | Wiring, throttle motor, alternator |
| P1174 | Electronic throttle system (ETS), closed throttle 1 – malfunction | ETS stuck, ECM |
| P1175 | Electronic throttle system (ETS), closed throttle 2 – malfunction | ETS stuck, ECM |
| P1176 | ETS throttle motor – circuit 1 malfunction | Wiring open/short circuit, throttle motor |
| P1177 | ETS throttle motor – circuit 2 malfunction | Wiring open/short circuit, throttle motor |
| P1178 | Electronic throttle system (ETS) relay – malfunction | Wiring, ETS relay, ECM |
| P1184 | Heated oxygen sensor (H02S) 1, bank 2 – no activity detected | Wiring open circuit, heating inoperative, H02S |
| P1191 | Electronic throttle system (ETS), limp-home valve – malfunction | – |
| P1192 | Electronic throttle system (ETS) – limp-home valve ON | Target following malfunction |
| P1193 | Electronic throttle system (ETS) – limp-home valve ON | Low RPM |
| P1194 | Electronic throttle system (ETS) – limp-home valve ON | TP sensor 2 malfunction |
| P1195 | Electronic throttle system (ETS) – limp-home valve ON | Target following delay |
| P1196 | Electronic throttle system (ETS) – limp-home
valve ON | Close throttle stuck |
| P1295 | Electronic throttle system (ETS) – circuit malfunction | Wiring, TP sensor, MAF sensor, MAP sensor, ECM |
| P1307 | Rough road sensor – malfunction | Wiring, rough road sensor, ECM |
| P1308 | Rough road sensor – voltage low | Wiring, rough road sensor, ECM |
| P1309 | Rough road sensor – voltage high | Wiring, rough road sensor, ECM |
| P1330 | Ignition spark timing – malfunction | Wiring between ROM change tool and ECM |
| P1372 | Vehicle speed sensor (VSS) – range/performance problem | Wiring, wheel speed sensor, mechanical fault |
| P1400 | Exhaust gas recirculation (EGR) system – monitor malfunction | Wiring, EGR solenoid, EGR valve, mechanical fault, ECM |
| P1401 | Fuel tank leakage diagnostic module -system malfunction | Fuel tank leakage diagnostic module |
| P1402 | Fuel tank leakage diagnostic module – motor malfunction | Fuel tank leakage diagnostic module motor |
| P1403 | Fuel tank leakage diagnostic module – valve malfunction | Fuel tank leakage diagnostic module valve |
| P1404 | Fuel tank leakage diagnostic module – heater malfunction | Fuel tank leakage diagnostic module |
| P1440 | Evaporative emission (EVAP) system, vent
valve – circuit malfunction | Wiring, EVAP canister purge valve, ECM |
| P1502 | Wheel speed sensor – open circuit | Wiring, wheel speed sensor |
| P1503 | Cruise control switch – circuit malfunction | Wiring, cruise control switch |
| P1504 | Cruise control switch, CANCEL – circuit malfunction | Wiring, cruise control switch |
| P1505 | Idle air control (lAC) valve – opening coil circuit – open circuit | Wiring, lAC valve |
| P1506 | Idle air control (lAC) valve – opening coil circuit – short circuit | Wiring, lAC valve |
| P1507 | Idle air control (lAC) valve – closing coil circuit – open circuit | Wiring, lAC valve |
| P1508 | Idle air control (lAC) valve – closing coil circuit – short circuit | Wiring, lAC valve |
| P1510 | Idle air control (lAC) valve – circuit malfunction – open/short circuit | Wiring, lAC valve, mechanical fault |
| P1511 | Idle air control {lAC) valve – circuit malfunction – open/short circuit | Wiring, lAC valve, mechanical fault |
| P1513 | Idle air control (lAC) valve – opening coil circuit – short circuit | Wiring, lAC valve, mechanical fault |
| P1515 | Idle air control (lAC) valve – coil 1 – signal malfunction | Wiring, lAC valve |
| P1516 | Idle air control {lAC) valve – coil 2 – signal malfunction | Wiring, lAC valve |
| P1520 | Alternator – FR terminal malfunction | Wiring |
| P1521 | Power steering pressure (PSP) switch – circuit malfunction | Wiring, PSP switch |
| P1523 | Intake manifold air control solenoid | Wiring, air control solenoid, ECM |
| P1529 | Transmission control module (TCM) – communication | Wiring, TCM, ECM |
| P1550 | Knock sensor (KS) – signal malfunction | Wiring, KS, ECM |
| P1552 | Idle air control (lAC) valve – closing coil circuit – short circuit | Wiring, lAC valve, mechanical fault |
| P1553 | Idle air control (lAC) valve – closing coil circuit – open circuit | Wiring, lAC valve, mechanical fault |
| P1560 | Knock sensor (KS) – signal malfunction | Wiring, ECM |
| P1586 | AT coding – signal not plausible | Wiring, mechanical fault |
| P1602 | Transmission control module (TCM) – serial communication problem | Wiring, TCM, ECM |
| P1605 | G-force sensor – circuit malfunction | Wiring, G-force sensor, ECM |
| P1606 | G-force sensor – signal not plausible | Wiring, G-force sensor, ECM |
| P1607 | Engine control module (ECM)/electronic throttle system (ETS) – communication malfunction | ECM, ETS |
| P1608 | Electronic throttle system (ETS)/engine control module (ECM) – communication malfunction | ETS, ECM |
| P1609 | Immobilizer control module – malfunction | Wiring, immobilizer control module, ECM |
| P1611 | MIL request signal – circuiVvoltage low | Wiring, ECM |
| P1613 D | MIL request signal – circuiVvoltage high | Wiring, ECM |
| P1613 9 | Electronic throttle system (ETS), controller- malfunction | Wiring, ECM to ETS |
| P1614 B | MIL request signal – circuiVvoltage high | Wiring, ECM |
| P1614 9 | Electronic throttle system (ETS), EEPROM RJW – malfunction | ECM to ETS communication error |
| P1615 | Electronic throttle system (ETS), controller- malfunction | Wiring, ETS to ECM |
| P1616 | Engine control relay – circuit malfunction | Wiring, fuse, engine control relay |
| P1623 | Malfunction indicator lamp (MIL) – circuit malfunction | Wiring, MIL |
| P1624 0 | Engine coolant blower motor relay -low speed circuit malfunction | Wiring, engine coolant blower motor relay |
| P1624 fJ | Transmission control module (TCM) – system malfunction | Wiring, trouble code(s) stored in other system(s) |
| P1625 | Engine coolant blower motor relay – high speed circuit malfunction | Wiring, engine coolant blower motor relay |
| P1632 Ill | CAN data bus OFF | – |
| P1632 [iJ | Traction control system – malfunction | – |
| P1642 | Engine control module (ECM) – non immobilizer/incorrect type | ECM |
| P1665 | Ignition power stage A – circuit malfunction | Wiring, ignition control module (ICM) |
| P1670 | Ignition power stage B – circuit malfunction | Wiring, ignition control module (ICM) |
| P1690 | Immobilizer system – malfunction | Wiring, immobilizer control module, ECM |
| P1691 | Immobilizer system – antenna malfunction | Wiring, antenna, immobilizer control module |
| P1693 0 | Transmission control module (TCM) MIL
request circuit – circuit malfunction | Wiring, TCM, ECM |
| P1693 fJ | Immobilizer system – transponder malfunction | Wiring, ECM |
| P1694 | Immobilizer system – ECM signal malfunction | Wiring, ECM |
| P1695 | Immobilizer system – ECM EPROM
malfunction | Wiring, ECM |
| P1696 | Immobilizer system – ECM EPROM
malfunction | Wiring, ECM |
| P1707 | Cruise control, brake pedal position (BPP)
switch – circuit malfunction | Wiring, BPP switch |
| P1715 | AT pulse generators – open circuit | Wiring, mechanical fault |
| P1750 | AT – shift control solenoids | Wiring, mechanical fault |
| P1765 | Transmission control module (TCM) – torque reduction malfunction | Wiring, TCM, ECM |