| Scan code | Fault location | Probable cause |
| PO,P2,UO | Refer to OBD-II trouble code tables | – |
| P1133 | Heated oxygen sensor (H025)/oxygen sensor(025) 1 -insufficient switching | Wiring, oxygen sensor heater, exhaust system leaking, H025 |
| P1134 | Heated oxygen sensor (H025) 1 -slow response | Wiring open circuit/short circuit to ground, exhaust system leaking, H025 |
| P1137 | Heated oxygen sensor (H02S)/oxygen sensor(02S) 2 -insufficient switching | Wiring, H02S/02S, ECM |
| P1138 | Heated oxygen sensor (H02S)/oxygen sensor(025) 2 -insufficient switching | Wiring, H02S/02S, ECM |
| P1171 | Fuel system -lean during acceleration | Fuel filter, fuel pump, H025!025, injectors |
| P1336 | Crankshaft position (CKP) sensor -variation not learned | Learning procedure not performed |
| P1380 | Rough road signal -signal error | ABS control module trouble code(s) stored |
| P1381 | Rough road signal -no communication fromantilock 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, EGR valve position sensor, EGR solenoid |
| P1406 | Exhaust gas recirculation (EGR) valve position sensor circuit malfunction | Wiring open circuit/short circuit to groundl short circuit to positive, EGR valve position sensor, EGR valve |
| P1441 | Evaporative emission (EVAP) system -leak detected | Hose connection(s), EVAP canister, EVAP canister purge valve |
| P1520 | Park/neutral position (PNP) switch | Wiring short circuit to ground, incorrectly adjusted |
| P1546 | AlC compressor clutch relay -circuit malfunction | Wiring open circuit/short circuit to groundl short circuit to positive, AlC compressor clutch relay, ECM |
| P1554 | Cruise control status circuit | Wiring short circuit to ground, cruise control module, ECM |
| P1585 | Cruise control system -inhibit output circuit | Wiring open circuit/short circuit to groundl short circuit to positive, supply wire, cruise controlmotor/actuator, ECM |
| P1601 | CAN data bus -circuit malfunction | Wiring open circuit/short circuit to groundl short circuit to positive, instrument panel, ECM |
| P1600 | Engine control module (ECM) | ECM |
| P1601 | Data bus -circuit malfunction | Wiring open circuit/short circuit to ground! short circuit to positive, instrument panel, ECM |
| P1621 | Engine control module (ECM) -memory performance | ECM |
| P1626 | Data bus, immobilizer | Wiring, body control module (BCM) trouble code(s) stored |
| P1627 | Engine control module (ECM) | 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 leaming mode | Immobilizer code not programmed |
| P1631 | Engine control module (ECM) -incorrectimmobilizer code | Incorrect key, immobilizer code not programmed |
| P1632 | Engine control module (ECM), fuel disable signal | Fuses, BCM, immobilizer code |
| P1680 | Engine control module (ECM) | ECM |
| P1681 | Engine control module (ECM) | ECM |
| P1683 | Engine control module (ECM) | ECM |
| U1016 | Instrument panel, CAN data bus communication malfunction | Wiring open circuit!short circuit to ground/ short circuit to positive, instrument panel, ECM |
