| Scan code | Fault location | Probable cause |
| PO,P2,UO | Refer to OBO-II trouble code tables | – |
| P1106 | Manifold absolute pressure (MAP) sensor circuitintermittent -voltage high | Wiring open circuit/short circuit to ground! short circuit to positive |
| P1107 | Manifold absolute pressure (MAP) sensor circuitintermittent -voltage low | Wiring short circuit to ground |
| P1111 | Intake air temperature (IAT) sensor -circuit intermittent -voltage high | Wiring open circuit, ground lead defective |
| P1112 | Intake air temperature (IAT) sensor -circuitintermittent -voltage low | Wiring short circuit to ground |
| P1114 | Engine coolant temperature (EeT) sensor circuit malfunction -voltage low | Wiring short circuit to ground |
| P1115 | Engine coolant temperature (ECT) sensor circuitmalfunction -voltage high | Wiring open circuit, ground lead defective |
| P1121 | Throttle position (TP) sensor -circuit malfunction -voltage high | Wiring 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 (H02S) 1, bank 1 insufficient switching | Wiring, oxygen sensor heater, exhaust system leaking, H02S |
| P1134 | Heated oxygen sensor (H02S) 1, bank 1 slowresponse | Wiring, oxygen sensor heater, exhaust system leaking, H025 |
| P1336 | Crankshaft position (CKP) sensor -variation not learned | Learning procedure not performed |
| P1351 | Ignition control module (ICM) -ignition coil 1 circuit voltage high | Wiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM |
| P1352 | Ignition control module (leM) -ignition coil 2 circuit voltage high | Wiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM |
| P1353 | Ignition control module (ICM) -ignition coil 3circuit voltage high | Wiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM |
| P1354 | Ignition control module (ICM) -ignition coil 4circuit voltage high | Wiring open circuit/short circuit to groundl short circuit to positive, ICM, ECM |
| P1355 | Ignition control module (ICM) -ignition coil 5circuit voltage high | Wiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM |
| P1356 | Ignition control module (ICM) -ignition coil 6 circuit voltage high | Wiring open circuit/short circuit to ground/ short circuit to positive, ICM, ECM |
| P1361 | Ignition control module (ICM) -ignition coil 1circuit voltage low | Wiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM |
| P1362 | Ignition control module (ICM) -ignition coil 2 circuit voltage low | Wiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM |
| P1363 | Ignition control module (ICM) -ignition coil 3circuit voltage low | Wiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM |
| P1364 | Ignition control module (ICM) -ignition coil 4circuit voltage low | Wiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM |
| P1365 | Ignition control module (ICM) -ignition coil 5 circuit voltage low | Wiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM |
| P1366 | Ignition control module (ICM) -ignition coil 6circuit voltage low | Wiring short circuit to ground/positive, bypass circuit short circuit to ground, ICM, ECM |
| P1372 | Crankshaft position (CKP) sensor | Wiring open circuit/short circuit to ground/ short circuit to positive, CKP sensor, ECM |
| P1380 | Rough road signal -signal error | ABS control module trouble code(s) stored |
| P1381 | Rough road signal -no communication from 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 |
| P1546 | AlC compressor clutch relay -circuit malfunction | Wiring open circuit/short circuit to ground/ short circuit to positive, 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 circuit | Wiring open circuit/short circuit to ground/ short circuit to positive, ABS control module trouble code(s) stored, ECM |
| P1575 | Brake pedal position (BPP) switch -extended travel contacts -voltage high | Wiring, ABS |
| P1585 | Cruise control system -inhibit output circuit | Wiring open circuit/short circuit to ground/ short circuit to positive, supply wire, cruise control motor/actuator, ECM |
| P1599 | Engine stall or near stall detected | ECM trouble code(s) stored, mechanical fault,transmission mechanical fault |
| P1602 | CAN data bus -ABSITCS | Wiring, ABS control module trouble code(s) stored |
| P1605 | Data bus, AlC – | Wiring -AlC system trouble code(s) stored |
| P1610 | CAN data bus -body control module (BCM) | Wiring, body control module (BCM) trouble code(s) stored |
| P1626 | Data bus, immobilizer | Wiring, body control module (BCM) trouble code(s) stored |
| 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 ground/positive, ground wiring open circuit, TP sensor, MAP sensor, EGR valve position sensor, ECM |
| P1639 | Sensor supply voltage -circuit B malfunction | Wiring short circuit to ground/positive, ground wiring open circuit, AlC refrigerant pressure sensor, fuel tank pressure (FTP) sensor, ECM |
| P1640 | Engine control module (ECM) quad driver! output driver | Wiring, ECM controlled components, ECM 0 |
| P1650 | Engine control module (ECM) quad driver! output driver | Wiring, ECM controlled components, ECM 0 |
| P1660 | Engine control module (ECM) quad driver/ output driver | Wiring, ECM controlled components, ECM 0 |
| P1670 | Engine control module (ECM) quad driver/ output driver | Wiring, ECM controlled components, ECM 0 |
| P1683 | Engine control module (ECM) | ECM |
| P1689 | Traction control system (TC5) -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 vaive 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 |
| P1814 | Torque converter clutch (TCC) -over-stressed | Fluid level low, fluid condition, 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 |
