| Various Models |
|---|
| Achieva 3.1L 96-97 VIN M | Aurora 3.8L 95 VIN 1/K | Bravada 4.3L 96-02 VIN W |
| Cutlass Ciera 3.1L 94-96 VIN M | Cutlass Supreme 3.1L 96-97 VIN M | Cutlass Supreme 3.4L 94-97 VIN X |
| Eighty Eight 3.8L 94-97 VIN 1/K/L | Ninety Eight 3.8L 94-96 VIN 1/L | Regency 3.8L 94-96 VIN 1/L |
| Silhouette 3.4L 96-97 VIN E | Silhouette 3.8L 94-95 VIN L | |
| Scan Code | Fault Location | Probable Cause |
| P0000-P0999 | Refer to OBD-II generic trouble code table | – |
| P1106 | Manifold absolute pressure (MAP) sensor – circuit intermittent – voltage high | Wiring open circuit/short circuit to positive |
| P1107 | Manifold absolute pressure (MAP) sensor – circuit intermittent – voltage low | Wiring open circuit/short circuit to ground |
| P1108 | Barometric pressure (BARO) sensor/manifold absolute pressure (MAP) sensor – comparison too high | Wiring open circuit/short circuit to positive, MAP sensor, ECM |
| P1111 | Intake air temperature (IAT) sensor – circuit intermittent – voltage high | Wiring open circuit/short circuit to positive, ground lead defective |
| P1112 | Intake air temperature (IAT) sensor – circuit intermittent – voltage low | Wiring short circuit to ground |
| P1114 | Engine coolant temperature (ECT) sensor – circuit malfunction – voltage low | Wiring short circuit to ground |
| P1115 | Engine coolant temperature (ECT) sensor – circuit malfunction – voltage high | Wiring open circuit/short circuit to positive, ground lead defective |
| P1120 | Throttle motor position sensor 1 – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM |
| P1121 | Throttle position (TP) sensor – circuit malfunction – voltage high | Wiring open circuit/short circuit to positive, ground lead defective |
| P1122 | Throttle position (TP) sensor – circuit malfunction – voltage low | Wiring open circuit/short circuit to ground |
| P1133 | Heated oxygen sensor (HO2S) 1, bank 1 – insufficient switching | Wiring open circuit/short circuit to ground,exhaust system leaking, HO2S |
| P1134 | Heated oxygen sensor (HO2S) 1, bank 1 – slow response | Wiring open circuit/short circuit to ground,exhaust system leaking, HO2S |
| P1137 | Heated oxygen sensor (HO2S) 2, – voltage low | Wiring, oxygen sensor heater, exhaust system leaking, HO2S |
| P1138 | Heated oxygen sensor (HO2S) 2, – voltage high | Wiring short circuit to positive, fuel pressure high, fuel contamination, injector(s) leaking, HO2S, ECM |
| P1153 | Heated oxygen sensor (HO2S) 1, bank 2 – insufficient switching | Wiring, oxygen sensor heater, exhaust system leaking, HO2S |
| P1154 | Heated oxygen sensor (HO2S) 1, bank 2 – slow response | Wiring, oxygen sensor heater, exhaust system leaking, HO2S |
| P1171 | Heated oxygen sensor (HO2S) 1 – voltage low | Fuel supply blocked, injector(s) blocked, manifold absolute pressure (MAP) sensor wiring |
| P1200 | Injector(s) – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, ECM |
| P1220 | Throttle motor position sensor 2 – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM |
| P1257 | Supercharger (SC) – over-boost | Hoses blocked/leaking/interchanged/not connected, wiring short circuit to ground, supercharger (SC) bypass valve tight/sticking, supercharger (SC) bypass valve solenoid, ECM |
| P1271 | Accelerator pedal position (APP) sensor 1/2 – signal variation | Wiring, APP sensor, ECM |
| P1275 | Accelerator pedal position (APP) sensor 1 – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, APP sensor, ECM |
| P1280 | Accelerator pedal position (APP) sensor 2 – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, APP sensor, ECM |
| P1336 | Crankshaft position sensor (CKP) – variation not learned | Learning procedure not performed |
| P1350 | Ignition control module (ICM) – bypass line monitor circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM |
| P1351 | Ignition control module, ignition control (IC) circuit – voltage high | Wiring open circuit, ICM, ECM |
| P1361 | Ignition control module (ICM) – IC circuit voltage low | Wiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM |
| P1374 | Ignition control module (ICM) – 3X reference circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, wiring routed near spark plug wires, ignition coils arcing/tracking, ICM, ECM |
| P1380 | Rough road signal – signal error | ABS control module trouble code(s) stored |
| P1381 | Rough road signal – no communication from antilock brake system (ABS) CAN data bus | Wiring open circuit, ABS system |
| P1403 | Exhaust gas recirculation (EGR) valve solenoid 1 | Wiring open circuit/short circuit to ground, exhaust system blocked, EGR valve, ECM |
| P1404 | Exhaust gas recirculation (EGR) valve – stuck open | Wiring open circuit/short circuit to positive, exhaust gas recirculation (EGR) valve position sensor, EGR solenoid |
| P1404 (Cutlass Supreme 3.4L) | Exhaust gas recirculation (EGR) valve solenoid 2 | Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| P1405 | Exhaust gas recirculation (EGR) valve solenoid 3 | Wiring open circuit/short circuit to ground, exhaust system blocked, EGR valve, ECM |
| 1406 | Exhaust gas recirculation (EGR) valve position sensor – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, EGR valve, ECM |
| 1415 | Secondary air injection (AIR) system | Wiring, hoses blocked/leaking, AIR valve |
| 1416 | Secondary air injection (AIR) system | Wiring, hoses blocked/leaking, AIR pump relay |
| P1441 | Evaporative emission (EVAP) system – leak detected | Hose connection(s), EVAP canister, EVAP canister purge valve |
| P1442 | Evaporative emission (EVAP) system vacuum switch – circuit malfunction | Hoses blocked/leaking, wiring, EVAP canister, ECM |
| P1483 | Engine cooling system – performance | Cooling system, engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensor |
| P1508 | Idle air control (IAC) valve – low rpm | Wiring open circuit/short circuit to ground/short circuit to positive, IAC valve, throttle valve tight/sticking |
| P1509 | Idle air control (IAC) valve – high rpm | Wiring open circuit/short circuit to ground/short circuit to positive, IAC valve, throttle valve tight/sticking |
| P1512 | Throttle control unit – signal variation | Wiring, throttle control unit, ECM |
| P1514 | Intake air flow – excessive flow | Throttle control unit, MAP sensor, CMP sensor signal, ECM |
| P1515 | Throttle command/actual throttle position – signal variation | Wiring, throttle valve sticking, throttle control unit, ECM |
| P1516 | Throttle command/actual throttle position – signal variation | Wiring, throttle valve sticking, throttle control unit, ECM |
| P1520 | Park/neutral position (PNP) switch | Wiring short circuit to ground, incorrectly adjusted PNP switch |
| P1523 | Throttle control unit, throttle position during battery saving mode | Throttle valve movement restricted, throttle control unit, ECM |
| P1530 (Aurora/Eighty Eight/Ninety Eighy/Regency/Silhouette 3.8L) | A/C refrigerant pressure switch – engine coolant blower motors | A/C refrigerant pressure switch, wiring open circuit, ECM |
| P1530 | A/C refrigerant pressure sensor – circuit malfunction | A/C refrigerant pressure, wiring open circuit/short circuit to ground, A/C refrigerant pressure sensor, ECM |
| 1531 | Low A/C refrigerant charge | Low A/C refrigerant charge, wiring open circuit/short circuit to ground/short circuit to positive, A/C refrigerant low pressure switch, ECM |
| P1550 | Cruise control stepper motor, circuit malfunction | Wiring open circuit/short circuit to positive, cruise control module, ECM |
| P1554 | Cruise control status circuit – high voltage | Wiring open circuit/short circuit to ground, cruise control module, ECM |
| P1558 | Cruise control servo – servo position sensor low | Hose leaking, cruise control servo |
| P1561 | Cruise control vent solenoid | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control vent solenoid, cruise control servo, ECM |
| P1562 | Cruise control vacuum solenoid | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control servo, ECM |
| P1565 | Cruise control servo position sensor – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control servo, ECM |
| P1567 | Cruise control switch – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control switch, brake pedal vacuum valve, ECM |
| P1568 | Cruise control servo – servo position sensor high | Hose blocked, brake pedal vacuum valve, cruise control servo, cruise control cable binding |
| P1571 | Traction control system (TCS), torque request circuit | Wiring open circuit/short circuit to ground/short circuit to positive, ABS control module trouble code (s) stored, ECM |
| P1573 | Data bus – antilock brake system (ABS)/traction control system (TCS) | Wiring, ABS control module trouble codes(s) stored |
| P1599 | Cruise control – power management mode | Cruise control accelerator cable adjustment, hoses blocked, brake pedal vacuum valve, cruise control servo |
| P1600 | Engine control module (ECM) | ECM |
| P1619 | Engine oil life monitor reset switch – circuit malfunction | Wiring short circuit to ground, engine oil life monitor reset switch, ECM |
| P1621 | Engine control module (ECM) – memory performance | ECM |
| P1623 | Engine control module (ECM) – PROM | Insecure PROM, incorrectly coded |
| P1626 | Immobilizer control module | Wiring, body control module (BCM) trouble code(s) stored |
| P1627 | Engine control module – memory performance | ECM |
| P1629 | Immobilizer control module – fuel enable signal | Incorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM |
| P1630 | Battery voltage – high/low | Wiring, alternator |
| P1630 | Engine control module (ECM), ignition supply voltage | Fuse, wiring open circuit, ECM |
| P1631 | Engine control module (ECM) – incorrect immobilizer code | Incorrect key, immobilizer code not programmed |
| P1633 | Engine control module (ECM), ignition supply voltage | Fuse, wiring open circuit, ECM |
| P1635 | Sensor supply voltage – circuit A malfunction | Wiring short circuit to positive, ground wiring open circuit, TP sensor, MAP sensor, EGR valve, ECM |
| P1639 | Sensor supply voltage – circuit B malfunction | Wiring short circuit to ground/positive, ground wiring open circuit, A/C refrigerant pressure sensor, ECM |
| P1640 | Engine control module quad driver/output driver | Wiring, ECM controlled components, ECM *(see below for additional information) |
| P1641 | Malfunction indicator lamp (MIL) – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, MIL, supply wire, ECM |
| P1643 | Fuel pump control module – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, fuel pump control module, ECM |
| P1645 | Supercharger (SC) control valve solenoid – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, SC control valve solenoid, ECM |
| P1650 | Engine control module, quad driver/output driver | Wiring, ECM controlled components, ECM * (see below for additional information) |
| P1651 | Engine coolant blower motor relay 1 – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, engine coolant blower motor relay 1, ECM |
| P1652 | Engine coolant blower motor relay 2 – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, engine coolant blower motor relay 2, ECM |
| P1653 (Silhouette 3.4L) | Fuel gauge tank sensor – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM |
| P1653 (Eighty Eight/Ninety Eight/Regency 3.8L) | Traction control system (TCS) – delivered torque circuit | Wiring open circuit/short circuit to ground/short circuit to positive, ABS control module trouble code(s) stored, ECM |
| P1654 | A/C compressor clutch relay – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, A/C compressor clutch relay, ECM |
| P1655 | Evaporative emission (EVAP) canister purge valve – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, EVAP canister purge valve, ECM |
| P1662 | Cruise control inhibit circuit – circuit malfunction | Wiring open circuit/short circuit to ground, cruise control motor/actuator, cruise control module, ECM |
| P1663 | Alternator warning lamp – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, instrument panel, ECM |
| P1665 | Evaporative emission (EVAP) canister vent valve – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, EVAP canister vent valve, ECM |
| P1670 | Engine control module quad driver/output driver | Wiring, ECM * (see below for additional information) |
| P1671 (Cutlass Supreme 3.1L) | Engine oil change warning lamp – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, engine oil change warning lamp, ECM |
| P1671 | Malfunction indicator lamp (MIL) – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, MIL, ECM |
| P1672 | Engine oil level warning lamp – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM |
| P1673 | Engine coolant ‘hot’ warning lamp – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, cooling system, ECM |
| P1674 | Tachometer – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM |
| P1675 | Evaporative emission (EVAP) canister vent valve – circuit malfunction | Wiring open circuit/short circuit to ground, EVAP canister vent valve, ECM |
| P1676 | Evaporative emission (EVAP) canister purge valve – circuit malfunction | Wiring open circuit/short circuit to ground, EVAP canister purge valve, ECM |
| P1680 | Engine control module (ECM) | ECM |
| P1681 | Engine control module (ECM) | ECM |
| P1682 | Engine control module (ECM), ignition supply voltage | Fuse, wiring open circuit, ECM |
| P1683 | Engine control module (ECM) | ECM |
| P1860 | Torque converter clutch (TCC) solenoid – circuit malfunction | Wiring open circuit/short circuit to ground, TCC solenoid, ECM |
| U1026 | Transmission control module (TCM)/four wheel drive control module, CAN data bus – communication malfunction | Wiring, BCM |
| U1041 | Antilock brake system (ABS)/traction control system (TCS), CAN data bus – communication malfunction | Wiring, ABS/TCS trouble codes stored |
| U1064 | Body control module (BCM), CAN data bus – communication malfunction | Wiring, BCM |
