OBDII Oldsmobile Code Definitions.

Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.

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Oldsmobile Codes
Trouble Code Fault Location Probable Cause
P1031Heated oxygen sensor (H02S) 1, bank 1 heatercurrent monitor control circuitWiring short circuit to positive, H02S, ECM
P1032Heated oxygen sensor (H02S) 1, bank 1 heaterwarm up control circuitWiring short circuit to positive, H02S, ECM
P1106Manifold absolute pressure (MAP) sensor circuit intermittent voltage highWiring open circuit/short circuit to ground/ short circuit to positive
P1107Manifold absolute pressure (MAP) sensor circuit intermittent -voltage lowWiring short circuit to ground
P1108Barometric pressure (BARO) sensor/manifoldabsolute pressure (MAP) sensor -comparison too highWiring open circuit/short circuit to positive, MAP sensor, ECM
P1111Intake air temperature (IAT) sensor -circuitintermittent -voltage highWiring open circuit, ground lead defective
P1112Intake air temperature (lAT) sensor -circuit intermittent -voltage lowWiring short circuit to ground
P1114Engine coolant temperature (ECT) sensor circuit malfunction -voltage lowWiring short circuit to ground
P1115Engine coolant temperature (ECT) sensor circuit malfunction -voltage highWiring open circuit, ground lead defective
P1120Throttle motor position sensor 1 -circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, throttle control unit, ECM
P1121Throttle position (TP) sensor -circuit malfunction -voltage highWiring short circuit to positive, ground lead defective
P1122Throttle position (TP) sensor -circuit malfunction -voltage lowWiring open circuit/short circuit to ground
P1133Heated oxygen sensor (H02S) 1, bank 1insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1134Heated oxygen sensor (H02S) 1, bank 1 slow responseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1137Heated oxygen sensor (H02S) 2 -voltage lowWiring, oxygen sensor heater, exhaust system leaking, H02S
P1138Heated oxygen sensor (H02S) 2 -voltage highWiring short circuit to positive, fuel pressure high, fuel contamination, injector(s) leaking, H02S, ECM
P1139Heated oxygen sensor (H02S) 2, bank 1insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1140Heated oxygen sensor (H02S) 2, bank 1 slow responseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1153Heated oxygen sensor (H02S) 1, bank 2insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1154Heated oxygen sensor (H02S) 1, bank 2 slow responseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1171Heated oxygen sensor (H02S) 1 -voltage lowFuel supply blocked, injector(s) blocked, manifold absolute pressure (MAP) sensor wiring
P1174Fuel Trim Cylinder Balance Bank 1
P1175Fuel Trim Cylinder Balance Bank 2
P1200 – P1299 (Fuel and air metering – injector circuit)
P1200Injector(s) -circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, injectors, ECM
P1220Throttle motor position sensor 2 -circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, throttle control unit, ECM
P1221Throttle motor position sensor 1/2 -signal variationWiring, throttle control unit, ECM
P1257Supercharger (SC) -over-boostHoses blockedlleaking/interchanged/not connected, wiring short circuit to ground, supercharger (SC) bypass valve tight/ sticking, supercharger (SC) bypass valve solenoid, ECM
P1258Engine overheatingCooling system, engine coolant temperature (ECT) sensor
P1271Accelerator pedal position (APP) sensor 1/2signal variationWiring, APP sensor, ECM
P1275Accelerator pedal position (APP) sensor 1 circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, APP sensor, ECM
P1280Accelerator pedal pOSition (APP) sensor 2 circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, APP sensor, ECM
P1320Ignition control module (ICM) -4X reference circuit, intermittentWiring open circuit/short circuit to ground, ICM, ECM
P1323Ignition control module (ICM) -24X reference circuit, low frequencyWiring open circuit/short circuit to ground, ICM,ECM
P1336Crankshaft, position (CKP) sensor -variation not leamedLearning procedure not performed
P1345Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -signal variationCKP sensor, distributor/camshaft alignment, mechanical fault
P1350Ignition control module (ICM) -bypass line monitor circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, ICM, ECM
P1351Ignition control module (ICM) -ignition coil 1 circuit voltage highWiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM
P1352Ignition control module (leM) -ignition coil 2 circuit voltage highWiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM
P1353Ignition control module (ICM) -ignition coil 3circuit voltage highWiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM
P1354Ignition control module (ICM) -ignition coil 4circuit voltage highWiring open circuit/short circuit to groundl short circuit to positive, ICM, ECM
P1355Ignition control module (ICM) -ignition coil 5circuit voltage highWiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM
P1356Ignition control module (ICM) -ignition coil 6 circuit voltage highWiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM
P1359Ignition control module (ICM) bank 1 -circuit malfunctionWiring open circuit/short circuit to positive, ICM, ECM
P1360Ignition control module (lCM) bank 2 -circuit malfunctionWiring open circuit/short circuit to positive, ICM, ECM
P1361Ignition control module (ICM) -ignition coil 1circuit voltage lowWiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM
P1362Ignition control module (ICM) -ignition coil 2 circuit voltage lowWiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM
P1363Ignition control module (ICM) -ignition coil 3circuit voltage lowWiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM
P1364Ignition control module (ICM) -ignition coil 4circuit voltage lowWiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM
P1365Ignition control module (ICM) -ignition coil 5 circuit voltage lowWiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM
P1366Ignition control module (ICM) -ignition coil 6circuit voltage lowWiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM
P1370Ignition control module (ICM) -4X reference circuit, too many pulsesWiring, electromagnetic interference, ICM
P1371Ignition control module (ICM) -4X reference circuit, too few pulsesWiring, electromagnetic interference, ICM
P1372Crankshaft position (CKP) sensorWiring open circuit/short circuit to ground/short circuit to positive, CKP sensor, ECM
P1374Ignition control module (ICM) -3X reference circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, wiring routed near spark plug wires, ignition coils arcingl tracking, ICM, ECM
P1375Ignition control module (ICM) -24X referencecircuit, voltage highWiring open circuit/short circuit to ground/short circuit to positive, CKP sensor(s), ICM
P1376Ignition control module (ICM) -ground circuitWiring open circuit/short circuit to positive, ground lead defective, ICM
P1377Ignition control module (ICM) -cam pulse/4Xreference pulseWiring open circuit/short circuit to ground, electromagnetic interference, valve timing
P1380Rough road signal -signal errorABS control module trouble code(s) stored
P1381Rough road signal -no communication from ASS CAN data bus .Wiring open circuit, ABS system
P1403Exhaust gas recirculation (EGR) valve solenoid 1Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM
P1404Exhaust gas recirculation (EGR) valve -stuck openWiring open circuit/short circuit to positive, exhaust gas recirculation (EGR) valve position sensor, EGR solenoid
P1405Exhaust gas recirculation (EGR) valve solenoid 3Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM
P1406Exhaust gas recirculation (EGR) valve position sensor circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, exhaust gas recirculation (EGR) valve position sensor, EGR valve
P1415Secondary air injection (AIR) systemWiring, hoses blockedlleaking, AIR valve
P1416Secondary air injection (AIR) systemWiring, hoses blockedlleaking, AIR valve, AIR pump relay
P1441Evaporative emission (EVAP) system -leak detectedHose connection(s), EVAP canister, EVAP canister purge valve
P1442Evaporative emission (EVAP) system vacuum switch -circuit malfunctionHoses blockedlleaking, wiring, EVAP canister, ECM
P1481Engine cooling fan system -cooling fan speed signal missingWiring open circuit/short circuit to ground, supply wire, engine cooling fan clutch, ECM
P1482Engine cooling fan system -clutch circuit malfunctionWiring open circuit/short circuit to ground, supply wire, engine cooling fan clutch, ECM
P1483Engine cooling system -performanceCooling system, engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensor
P1484Engine cooling fan system -maximum fan speed tolerance exceededWiring open circuit/short circuit to ground, supply wire, engine cooling fan clutch, ECM
P1508Idle air control (lAC) valve -rpm lowWiring open circuit/short circuit to ground, intake system blocked, throttle valve, lAC valve, ECM
P1509Idle air control (lAC) valve -rpm highWiring open circuit/short circuit to ground, intake system blocked, throttle valve, lAC valve, ECM
P1512Throttle control unit -signal variationWiring, throttle control unit, ECM
P1514Intake air flow -excessive flowThrottle control unit, MAP sensor, CMP sensor signal, ECM
P1515Throttle command/actual throttle position -signal variationWiring, throttle valve sticking, throttle control unit, ECM
P1516Throttle command/actual throttle position -signal variationWiring, throttle valve sticking, throttle control unit, ECM
P1520Park/neutral position (PNP) switchWiring short circuit to ground, incorrectly adjusted
P1523Throttle control unit, throttle position during battery saving modeThrottle valve movement restricted, throttle control unit, ECM
P1524Throttle position (TP) sensor -learned closed throttle angleAccelerator cable adjustment, throttle valve tight/sticking, throttle valve incorrectly adjusted
P1526Minimum throttle position not learnedInitial learn procedure not carried out
P1530AlC refrigerant pressure sensor, circuit malfunctionAlC refrigerant pressure, wiring open circuit/ short circuit to ground, AlC refrigerant pressure sensor, ECM
P1531Low AlC refrigerant chargeLow Ale refrigerant charge, wiring open circuit/short circuit to ground/short circuit to positive, AlC refrigerant low pressure switch, ECM
P1533A/C refrigerant temperature sensor -circuit ·malfunction low pressure sideWiring open circuit/short circuit to ground, A/C refrigerant temperature sensor, ECM
P1535A/C refrigerant temperature sensor -circuit malfunction high pressure sideWiring open circuit/short circuit to ground, A/C refrigerant temperature sensor, ECM
P1536A/C system -ECT over temperatureCooling system
P1537A/C request circuit -voltage lowWiring open circuit/short circuit to ground, A/C refrigerant low pressure switch, A/C control module, ECM
P1538A/C request circuit -voltage highWiring open circuit/short circuit to positive, A/C control module, ECM
P1540A/C system -high pressureWiring open circuit, A/C refrigerant high pressure switch, A/C system, ECM
P1542A/C system -high pressure/high temperatureHigh ambient temperature, A/C cooling system
P1545Ale compressor clutch relay -circuit malfunctionWiring open circuit/short circuit to ground, supply wire, Ale compressor clutch relay, ECM
P1546AlC compressor clutch relay -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, AlC compressor clutch relay,ECM
P1550Cruise control stepper motor, circuit malfunctionWiring open circuit/short circuit to ground, cruise control module, ECM
P1554Cruise control status circuit -high voltageWiring open circuit/short circuit to ground, cruise control module, ECM
P1558Cruise control servo -servo position sensor lowHoses leaking, cruise control servo
P1560Cruise control -transmission not in driveDriver error, transmission fluid pressure (TFP) switch circuit
P1561Cruise control vent solenoidWiring open circuit/short circuit to ground! short circuit to positive, cruise control vent solenoid, cruise control servo, ECM
P1562Cruise control vacuum solenoidWiring open circuit/short circuit to ground! short circuit to positive, cruise control vacuum solenoid, cruise control servo, ECM
P1564Cruise control -acceleration too highSlippery road conditions
P1565Cruise control servo position sensor -circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, cruise control servo, ECM
P1566Cruise control -engine speed too highSlippery road conditions, transmission mechanical fault
P1567Cruise control -active brake control system activeActive brake control system engaged with cruise control on
P1568Cruise control servo -servo position sensor highHoses blockedlleaking, brake pedal vacuum valve, cruise control servo
P1570Cruise control -traction control system (TCS) activeSlippery road surface
P1571Traction control system (TCS), torque request circuitWiring open circuit/short circuit to ground/short circuit to positive, ABS control module trouble code(s) stored, ECM
P1573CAN data bus -antilock brake system (ABS)! traction control system (TCS)Wiring, ABS control module trouble code(s) stored
P1574Brake pedal position (BPP) switch -voltage highWiring, ABS
P1575Brake pedal position (BPP) switch -extended travel contacts -voltage highWiring, ABS
P1579Transmission shifted from PIN to O/R at high throttle angleDriver error, wiring, transmission range (TR) switch
P1585Cruise control system -inhibit output circuitWiring open circuit/short circuit to ground/short circuit to positive, supply wire, cruise control motor/actuator, ECM
P1599Engine stall or near stall detectedECM trouble code(s) stored, mechanical fault, transmission mechanical fault
P1600 – P1699 (ECM – computer output circuit)
P1600Engine control module (ECM)ECM
P1601Data bus -circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, instrument panel, ECM
P1602CAN data bus -antilock brake system (ABS)/ traction control system (TCS)Wiring, ABS control module trouble code(s) stored
P1603CAN data bus -sensing/diagnostic module (SOM)Wiring
P1604CAN data bus -instrument panelWiring, body control module (SCM) trouble code(s) stored
P1605CAN data bus -A/CWiring, A/C system trouble code(s) stored
P1610CAN data bus -body control module (BCM)Wiring, body control module (BCM) trouble code(s) stored
P1617Engine oil level switch -circuit malfunctionWiring short circuit to ground, engine oil level, ECM
P1619Engine oil life monitor reset switch -circuit malfunctionWiring short circuit to ground, engine oil life monitor reset switch, ECM
P1621Engine control module (ECM) -memoryperformanceECM
P1623Engine control module (ECM) -PROMInsecure PROM, incorrectly coded
P1624Customer snapshot function operatedECM trouble codes stored
P1626CAN data bus, immobilizerWiring, body control module (SCM) trouble code(s) stored
P1627Engine control module (ECM) -memory performanceECM
P1629Immobilizer control module -fuel enable signalIncorrect ignition key, wiring open circuit/ short circuit to ground/short circuit to positive,immobilizer control module, ECM
P1630Engine control module (ECM), immobilizer codeleaming modeImmobilizer code not programmed
P1631Engine control module (ECM) -incorrect immobilizer codeIncorrect key, immobilizer code not programmed
P1632Engine control module (ECM), fuel disable signalFuses, BCM, immobilizer code
P1633Engine control module (ECM) ignition supply voltage, voltage lowWiring open circuit, ECM
P1634Engine control module (ECM) -ignition supply voltage -voltage lowWiring open circuit, ECM
P1635Sensor supply voltage -circuit A malfunctionWiring short circuit to ground/positive, ground wiring open circuit, TP sensor, MAP sensor, EGR valve position sensor, ECM
P1637Alternator ‘L’ terminal -circuit malfunctionWiring open circuit/short circuit to ground, alternator, battery temperature sensor, ECM
P1638Alternator ‘F’ terminal -circuit malfunctionWiring open circuit/short circuit to ground, alternator, ECM
P1639Sensor supply voltage -circuit B malfunctionWiring short circuit to ground/positive, ground wiring open circuit, A/C refrigerant pressure sensor, fuel tank pressure (FTP) sensor, ECM
P1640Engine control module (ECM) quad driverl output driverWiring, ECM controlled components, ECM 0
P1641Malfunction indicator lamp (MIL) -circuit malfunctionWiring open circuit/short circuit to ground, MIL, supply wire, ECM
P1642Vehicle speed sensor (VSS) -circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, VSS, ECM
P1643Fuel pump control module -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, fuel pump control module, ECM
P1644Delivered torque -circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, ASS trouble codes stored, ECM
P1645Evaporative emission (EVAP) solenoid circuit malfunctionWiring open circuit/short circuit to ground, EVAP solenoid, ECM
P1646Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister purge valve, ECM
P1650Engine control module (ECM) quad driver! output driverWiring, ECM controlled components, ECM 0
P1651Engine coolant blower motor relay 1 -circuit malfunctionWiring open circuit/short circuit to ground, supply wire, engine coolant blower motor relay, ECM
P1652Engine coolant blower motor relay 2 -circuit malfunctionWiring open circuit/short circuit ·to ground, supply wire, engine coolant blower motor relay(s), ECM
P1653A/C compressor clutch relay -circuit malfunctionWiring open ‘circuit/short circuit to ground, supply wire, A/C compressor clutch relay, ECM
P1654Cruise control disable circuit -circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, cruise control module, ECM
P1655Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1660Engine coolant blower motor relay(s) -circuit malfunctionWiring open circuit/short circuit to ground, engine coolant blower motor relay(s), ECM
P1662Cruise control inhibit circuit -circuit malfunctionWiring open circuit/short circuit to ground, cruise control motor/actuator, cruise control module, ECM
P1663Alternator warning lamp -circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, instrument panel, ECM
P1665Evaporative emission (EVAP) canister vent valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1670Engine control module (ECM) quad driver/ output driverWiring, ECM controlled components, ECM 0
P1671Malfunction indicator lamp (MIL) -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, MIL, ECM
P1672Engine oil level warning lamp -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, instrument panel, ECM
P1673Engine coolant ‘hot’ warning lamp -circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, instrument panel, cooling system, ECM
P1674Tachometer -circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, instrument panel, ECM
P1675Evaporative emission (EVAP) canister vent valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1676Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister purge valve, ECM
P1680Engine control module (ECM)ECM
P1681Engine control module (ECM)ECM
P1682Engine control module (ECM), ignition supply voltageFuse, wiring open circuit, ECM
P1683Engine control module (ECM)ECM
P1689Traction control system (TC8) -delivered torque output circuitWiring open circuit/short circuit to groundl short circuit to positive, ABS trouble codes stored, ECM
P1810Transmission fluid pressure (TFP) switch -manual vaive positionFluid level low, wiring open circuit/short circuit to ground, selector lever linkage incorrectly adjusted, ECM
P1811Shift time too long -adaptation limit reachedFluid level low, transmission mechanical fault
P1814Torque converter clutch (TCC) -over-stressedFluid level low, fluid condition, transmission mechanical fault
P1844Transmission Fluid Pressure Sensor/Switch 'A' Circuit Intermittent
P1860Torque converter clutch (TCC) solenoid -circuit malfunctionWiring open circuit/short circuit to ground, TCC solenoid, ECM
P1887Torque converter clutch (TCC) release switch -circuit malfunctionWiring open circuit, TCC solenoid release switch, ECM
U1016Instrument panel, CAN data bus communication malfunctionWiring open circuit!short circuit to ground/ short circuit to positive, instrument panel, ECM
U1026Transmission control module (TCM)/four wheeldrive control module, CAN data bus -communication malfunctionWiring, SCM
U1041Antilock brake system (ABS)/traction controlsystem (TCS), CAN data bus -communicationmalfunctionWiring, ABSfTCS trouble codes stored
U1064Body control module (SCM), CAN data bus -communication malfunctionWiring, BCM