| Various Models |
|---|
| Achieva 3.1L 98 VIN M | Alero 3.4L 99-02 VIN M | 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 |
| 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 |
| 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 |
| P1189 | Engine oil pressure warning switch | Wiring open circuit, engine oil pressure warning switch, 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 |
| 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 |
| P1352 | Ignition control module, bypass line – voltage high | Wiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM |
| P1361 | Ignition control module (ICM) – IC circuit voltage low | Wiring short circuit to ground, ICM, ECM |
| P1362 | Ignition control module (ICM) – bypass/IC circuit, voltage low | Wiring short circuit to ground, 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 |
| P1404 | Exhaust gas recirculation (EGR) valve – stuck open | Wiring open circuit/short circuit to positive, exhaust gas recirculation (EGR) valve position sensor, EGR solenoid |
| P1441 | Evaporative emission (EVAP) system – leak detected | Hose connection(s), EVAP canister, EVAP canister purge valve |
| P1483 | Engine cooling system – performance | Cooling system, engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensor |
| P1520 | Park/neutral position (PNP) switch | Wiring short circuit to ground, incorrectly adjusted PNP switch |
| P1546 | A/C compressor clutch relay – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, A/C compressor clutch relay, ECM |
| P1554 | Cruise control status circuit – high voltage | Wiring open circuit/short circuit to ground, cruise control module, ECM |
| 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 |
| P1585 | Cruise control system – inhibit output circuit | Wiring open/short circuit to ground/short circuit to positive, supply wire, cruise control motor/actuator, ECM |
| P1600 | Engine control module (ECM) | ECM |
| P1602 | CAN data bus – anti-lock brake system (ABS)/traction control system (TCS) | Wiring, ABS control module trouble code(s) stored |
| P1605 | CAN data bus – A/C | Wiring, A/C system trouble code(s) stored |
| P1610 | CAN data bus – body control module (BCM) | Wiring, body control module (BCM) trouble code(s) stored |
| 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 |
| 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 | Engine control module (ECM), immobilizer code learning mode | Immobilizer code not programmed |
| P1631 | Engine control module (ECM) – incorrect immobilizer code | Incorrect key, immobilizer code not programmed |
| 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 | A/C compressor clutch relay – circuit malfunction | Wiring open circuit/short circuit to ground, supply wire, A/C compressor clutch relay, 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 | Fuel gauge tank sensor – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM |
| P1653 (Silhouette 3.4L 1999) | Engine oil level warning lamp – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM |
| P1660 | Engine control module quad driver/output driver | Wiring, ECM controlled components, 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, 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 | 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 |
| 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 |
| P1683 | Engine control module (ECM) | ECM |
| P1689 | Traction control system (TCS) – delivered torque output circuit | Wiring open circuit/short circuit to ground/short circuit to positive, ABS trouble codes stored, ECM |
| P1810 | Transmission fluid pressure (TFP) switch – manual valve position | Fluid level low, wiring open circuit/short circuit to ground, selector lever linkage incorrectly adjusted, ECM |
| P1811 | Shift time too long – adaptation limit reached | Fluid level low, transmission mechanical fault |
| P1860 | Torque converter clutch (TCC) solenoid – circuit malfunction | Wiring open circuit/short circuit to ground, TCC solenoid, ECM |
| P1887 | Torque converter clutch (TCC) release switch – circuit malfunction | Wiring open circuit, TCC solenoid release switch, ECM |
