GM GM 96-00 7.4L VIN J Trouble Code Info

GM

96-00 7.4L VIN J
Scan Code Fault Location Probable Cause
POOOO-P0999 Refer to OBD-II trouble code table
P1106 Manifold absolute pressure (MAP) sensor -voltage high, intermittent  Wiring open circuit/short circuit to positive, poor connections
P1107 Manifold absolute pressure (MAP) sensor -voltage low, intermittent  Wiring short circuit to ground, poor connections
P1111 Intake air temperature (IAT) sensor -voltage high, intermittent  Wiring open circuit/short to positive, poor connections
P1112 Intake air temperature (IAT) sensor -voltage low, intermittent Wiring short circuit to ground
P1114 Engine coolant temperature (ECT) sensor -voltage low, intermittent  Wiring short circuit to ground, poor connections ,
P1115 Engine coolant temperature (ECT) sensor -voltage high, intermittent Wiring open circuit/short to positive, poor connections
P1120 Throttle motor position sensor 1 -circuit malfunction  Wiring, throttle control module
P1121 Throttle position (TP) sensor -voltage high, intermittent Wiring open circuit/short to positive, poor connections
P1122 Throttle position (TP) sensor -voltage low, intermittent  Wiring open circuit/short to ground, poor connections
P1125 Accelerator pedal position (APP) sensor 1/2/ 3 -signal malfunction  Wiring, APP sensor, ECM
P1133 Oxygen sensor (02S)/heated oxygen sensor (H02S) 1, bank 1 -insufficient SWitching  Wiring, exhaust system leaking, 02S/H02S
P1134 Heated oxygen sensor (H02S) 1, bank 1 -slow response  Wiring, oxygen sensor heater, exhaust system leaking, H02S
P1137 Heated oxygen sensor (H02S) 2, bank 1 -voltage low  Wiring, exhaust system leaking, H02S
P1138 Heated oxygen sensor (H02S) 2, bank 1 -voltage high  Wiring, H02S
P1153 Heated oxygen sensor (H02S) 1, bank 2 -insufficient switching  Wiring, oxygen sensor heater, exhaust system leaking, H02S
P1154 Heated oxygen sensor (H02S) 1, bank 2 -slow response  Wiring, oxygen sensor heater, exhaust system leaking, H02S
P1158 Heated oxygen sensor (H02S) 2, bank 2 -not switching, fuel trim (FT) rich mixture  Wiring, exhaust system leaking, H02S
P1171 Fuel system -lean during acceleration  Fuel filter, fuel pump, H02S, injectors
P1172 Fuel level sensors, primary and secondary -no fuel level change during fuel transfer from secondary to primary tank Wiring, fuel pump relays, secondary fuel pump, fuel level sensors, ECM
P1187 Engine oil temperature (EOT) sensor -voltage low  Wiring open circuit/short circuit to ground, EOT sensor, ECM
P1188 Engine oil temperature (EOT) sensor -voltage high  Wiring open circuit/short circuit to positive, EOT sensor, ECM
P1220 Throttle motor position sensor 2 -circuit malfunction Wiring, throttle control module
P1221 Throttle motor position sensor 1/2 -signal variation Wiring, throttle control module
P1222 Injector control, circuit monitor -malfunction Injector, Wiring
P1250 Intake manifold heater -circuit malfunction Wiring, intake manifold heater, intake manifold heater relay
P1258 Engine overheating Cooling system, ECT sensor
P1271 Accelerator pedal position (APP) sensor 1/2 -signal variation Wiring, APP sensor, ECM
P1272 Accelerator pedal position (APP) sensor 2/3 -signal variation Wiring, APP sensor, ECM
P1273 Accelerator pedal position (APP) sensor 1/3 -signal variation Wiring, APP sensor, ECM
P1275 Accelerator pedal position (APP) sensor 1 -circuit malfunction Wiring, APP sensor, ECM
P1276 Accelerator pedal position (APP) sensor 1 -range performance Wiring, APP sensor, ECM
P1280 Accelerator pedal position (APP) sensor 2 -circuit malfunction Wiring, APP sensor, ECM
P1281 Accelerator pedal position (APP) sensor 2 -range performance Wiring, APP sensor, ECM
P1285 Accelerator pedal position (APP) sensor 3 -circuit malfunction Wiring, APP sensor, ECM
P1286 Accelerator pedal position (APP) sensor 3 -range performance Wiring, APP sensor, ECM
P1336 Crankshaft position sensor (CKP) -variation not learned Learning procedure not performed
P1345 Crankshaft position sensor (CKP)/camshaft position sensor (CMP) -signal variation CKP sensor, distributor/camshaft alignment, mechanical fault
P1350 Ignition control system, bypass circuit -circuit malfunction Wiring, poor connections, ICM, ECM
P1351 Ignition control system, coil -voltage high Wiring open circuit, ICM, ECM
P1352 Ignition control system, bypass circuit -voltage high Wiring open circuit, ICM, ECM
P1361 Ignition control system, ignition control (Ie) circuit -voltage low Wiring, circuit short circuit to ground, poor connections, ICM, ECM
P1362 Ignition control, bypass circuit -voltage low Wiring short circuit to ground, ICM, ECM
P1371 Ignition control reference signal, low/high resolution -low signal lost Wiring,ICM
P1374 Crankshaft position sensor (CKP), high to low resolution frequency -signal variation Wiring, wiring routed near spark plug wires, ignition coils arcing/tracking, ICM, ECM
P1380 Antilock brake system (ABS)/traction control system (TCS), rough road signal to engine control module (ECM) -malfunction ABS trouble code(s) stored
P1381 Antilock brake system (ABS)/traction control system (TCS), rough road signal to engine control module (ECM) -no communication Wiring, poor connections, ABS
P1404 Exhaust gas recirculation (EGR) valve -not fully closing Wiring, poor connections, EGR valve position sensor, EGR solenoid
P1406 Exhaust gas recirculation (EGR) valve position sensor -range performance Wiring, EGR valve tight/sticking, EGR valve position sensor
P1408 Manifold absolute pressure (MAP) sensor -voltage out range Wiring, poor connections, MAP sensor, ECM
P1410 Evaporative emission (EVAP) canister purge valve -circuit malfunction Wiring, poor connectios, EVAP canister vent valve, ECM
P1415 Secondary air injection (AIR) system, bank 1 Wiring, hoses blocked/leaking, AIR valve
P1416 Secondary air injection (AIR) system, bank 2 Wiring, hoses blocked/leaking, AIR valve
P1431 Fuel level sensor -circuit malfunction Wiring, fuel level sensor
P1432 Fuel level sensor -low voltage Wiring open circuit, fuel level sensor
P1433 Fuel level sensor -voltage high Wiring short circuit to positive, fuel level sensor
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
P1450 Barometric pressure (BARO) sensor -voltage out of range Wiring, BARO sensor, ECM
P1451 Barometric pressure (BARO) sensor -performance range Wiring, poor connections, BARO sensor, ECM
P1500 Ignition switch, cranking signal/ system voltage -circuit malfunction Wiring, poor connections, ECM
P1504 Engine control module (ECM), vehicle speed sensor (VSS) output signal -circuit malfunction Wiring, poor connections, ABS, ECM
P1508 Idle air control (lAC) valve -low rpm Wiring open circuit/short circuit to ground/ short circuit to positive, lAC valve, throttle valve tight/sticking
P1509 Idle air control (lAC) valve -high rpm Wiring open circuit/short circuit to ground/ short circuit to positive, lAC valve, throttle valve tight/sticking
P1510 Engine control module (ECM), KAM supply voltage -circuit malfunction Wiring, poor connections, ECM
P1514 Throttle control unit, intake air flow -excessive Throttle control unit, MAP sensor, CMP sensor signal, ECM
P1515 Throttle command/actual throttle position -signal variation Wiring, throttle valve sticking, throttle control module
P1516 Throttle command/actual throttle position -signal variation Wiring, throttle valve sticking, throttle control module
P1517 Throttle control module -malfunction Throttle control module
P1518 Throttle control module/engine control module (ECM) -communication malfunction Wiring, throttle control module, ECM
P1519 Throttle motor position sensor 1 -signal malfunction Throttle control module
P1520 Park/neutral position (PNP) switch -circuit malfunction Wiring short circuit to ground, PNP switch incorrectly adjusted
P1523 Throttle control unit, closed throttle position -performance Throttle valve movement restricted, throttls control unit
P1530 Ignition timing adjustment connector Wiring short circuit to ground, connector short to ground
P1532 AlC refrigerant temperature sensor -voltage low Wiring open circuit/short circuit to ground, AlC refrigerant temperature sensor, ECM
P1533 AlC refrigerant temperature sensor -voltage high Wiring open circuit/short circuit to ground, AlC refrigerant temperature sensor, ECM
P1539 AlC compressor clutch relay -voltage high Wiring, AlC compressor clutch relay, ECM
P1543 AlC system -performance Refrigerant low, wiring, AlC refrigerant pressure sensor, AlC evaporator temperature sensor, ECM
P1545 AlC compressor clutch relay -voltage low Wiring, AlC compressor clutch relay, ECM
P1546 AlC compressor clutch relay -circuit malfunction Wiring, AlC 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 signal -malfunction Wiring, poor connections, ABSITCS
P1572 Traction control system (TCS), active signal -malfunction Wiring short to ground, ABSITCS, ECM
P1574 Brake pedal position switch (BPP), voltage high Wiring, ABS
P1575 Brake pedal position switch (BPP), extended travel contacts -voltage high Wiring, ABS
P1586 Cruise control system, brake switch 2 -circuit malfunction Wiring, poor connections, BPP switch
P1600 Engine control module (ECM) -malfunction ECM
P1601 CAN data bus, engine control module (ECM)I antilock brake system (ABS)/traction control system (TCS)/instrumentation control modulel diagnostic control module -some communication lost Wiring, poor connections, ECM, ABSITCS, diagnostic control module, instrumentation control module
P1602 Engine control module (ECM) to antilock brake system (ABS)/traction control system (TCS), CAN data bus -communication failure Wiring, poor connections, ABS control module
P1621 Engine control module (ECM) -malfunction ECM
P1624 Engine control module (ECM) -memory performance ECM
P1626 Engine control module (ECM) -fuel enable signal lost Wiring, poor connections, immobilizer control module, ECM
P1627 Engine control module (ECM) -malfunction ECM
P1629 Engine control module (ECM) -fuel enable signal not received Incorrect ignition key, wiring, poor connections, immobilizer control module, ECM
P1630 Engine control module (ECM), immobilizer code -learning mode ECM immobilizer code programming not completed
P1631 Engine control module (ECM) -incorrect immobilizer code Incorrect key, immobilizer code not programmed
P1632 Engine control module (ECM) -fuel disable signal received Fuses, SCM, immobilizer code
P1635 Engine control module (ECM), sensor supply voltage -circuit malfunction Wiring, poor connections, TP sensor, MAP sensor, EGR valve position sensor, FTP sensor, ECM
P1637 Alternator ‘L’ terminal -circuit malfunction Wiring open circuit/short circuit to ground, alternator, battery temperature sensor, ECM
P1638 Alternator ‘F’ terminal -circuit malfunction Wiring open circuit/short circuit to ground, alternator, ECM
P1639 Engine control module (ECM), sensor supply voltage -circuit malfunction Wiring, poor connections, fuel tank level sensor, ECM
P1641 Engine coolant blower motor relay 1 -circuit malfunction Wiring, engine coolant blower motor relay, ECM
P1642 Engine coolant blower motor relay 2 & 3 -circuit malfunction Wiring, engine coolant blower motor relay(s), ECM
P1643 Engine speed (RPM), engine control module (ECM) output signal -circuit malfunction Wiring, tachometer, ECM
P1644 Traction control system (TCS), delivered torque signal -malfunction Wiring, poor connections, ECM
P1651 Engine coolant blower motor relay 1 -circuit malfunction Wiring, engine coolant blower motor relay, ECM
P1652 (1996) Engine control module(ECM), vehicle speed sensor (VSS) output signal -circuit malfunction Wiring, poor connections, ECM
P1652 (1997-2000) Engine control module (ECM), firm suspension request signal -circuit malfunction Wiring, .poor connections, suspension control module, ECM
P1653 Fuel gauge, control signal -circuit malfunction Wiring, ECM
P1654 NC compressor clutch relay -circuit malfunction Wiring open circuit/short circuit to ground, AlC compressor clutch relay, ECM
P1655 Evaporative emission (EVAP) canister purge valve -circuit malfunction Wiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1657 Skip shift solenoid -circuit malfunction Wiring, skip shift solenoid, ECM
P1661 Malfunction indicator lamp (MIL) -circuit malfunction Wiring, MIL, ECM
P1662 Cruise control, inhibit output circuit -malfunction Wiring open circuit/short circuit to ground, cru.ise control motor/actuator, cruise control module, ECM
P1663 Alternator warning lamp, control signal -circuit malfunction Wiring, instrument panel, ECM
P1664 Skip shift warning lamp-circuit malfunction Wiring, skip shift warning lamp, ECM
P1665 Evaporative emission (EVAP) canister vent valve -circuit malfunction Wiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1667 Reverse inhibit solenoid -circuit malfunction Wiring, reverse inhibit solenoid, 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 ‘low’ warning lamp, control signal -circuit malfunction Wiring short circuit to ground, engine oil level, 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) -malfunction ECM
P1681 Engine control module (ECM) -malfunction ECM
P1683 Engine control module (ECM) -malfunction ECM
P1689 Traction control system (TCS), delivered torque signal -malfunction Wiring, poor connections, ECM
P1740 Cruise control system, overdrive disable signal -voltage low Wiring short to ground, ECM
P1781 Transmission control module (TCM), malfunction indicator lamp (MIL) request signal -voltage high/low Wiring TCM, ECM
P1810 Transmission gear pressure switch, signal -circuit malfunction Wiring open circuit/short circuit to ground, reverse/D1/D2/D3/D4 gear pressure switch(es), ECM
P1860 Torque converter clutch (TCC) solenoid, pulse width modulation (PWM) -circuit malfunction Wiring open circuit/short circuit to ground, TCC solenoid, ECM
P1870 Torque converter clutch (TCC) -slip speed excessive Transmission fluid level, wiring, TCC solenoid, ECM
P1875 Transmission, 4WD low selection signal circuit malfunction Wiring, transmission, four wheel drive control module, ECM
U1000 CAN data bus -communication malfunction Wiring, BCM, ECM, instrumentation control module, SOM
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, ABSITCS trouble codes stored
U1064 Body control module (BCM), CAN data bus communication malfunction Wiring, BCM
U1192 Engine control module (ECM)/immobilizer control module, CAN data bus -signal malfunction Wiring, immobilizer control module, ECM
U1193 Engine control module (ECM)/immobilizer control module, CAN data bus -signal malfunction Wiring, immobilizer control module, ECM
CAN data bus -signal low Wiring
1301 CAN data bus -signal high Wiring