| 00-02 6.0L VIN U |
| 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 |
A/C refrigerant temperature sensor -voltage low |
Wiring open circuit/short circuit to ground, A/C refrigerant temperature sensor, ECM |
| P1533 |
A/C refrigerant temperature sensor -voltage high |
Wiring open circuit/short circuit to ground, A/C refrigerant temperature sensor, ECM |
| P1539 |
A/C compressor clutch relay -voltage high |
Wiring, A/C compressor clutch relay, ECM |
| P1543 |
A/C system -performance |
Refrigerant low, wiring, A/C refrigerant pressure sensor, A/C evaporator temperature sensor, ECM |
| P1545 |
A/C compressor clutch relay -voltage low |
Wiring, A/C compressor clutch relay, ECM |
| P1546 |
A/C compressor clutch relay -circuit malfunction |
Wiring, 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 signal -malfunction |
Wiring, poor connections, ABS/TCS |
| P1572 |
Traction control system (TCS), active signal -malfunction |
Wiring short to ground, ABS/TCS, 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, ABS/TCS, 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 |
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, A/C 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, ABS/TCS 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 |
| U1300 |
CAN data bus -signal low |
Wiring |
| U1301 |
CAN data bus -signal high |
Wiring |
