| OBD·II code | Fault location | Probable cause |
| PO, P2,UO | Refer to 080-11 trouble code tables | – |
| P1106 | Manifold absolute pressure (MAP) sensor- circuiUintermittent voltage high | Wiring, MAP sensor |
| P1107 | Manifold absolute pressure (MAP) sensor- circuiU intermittent voltage low | Wiring, MAP sensor |
| P1111 | Intake air temperature (IAT) sensor-.circuiU
intermittent voltage high | Wiring, IAT sensor |
| P1112 | Intake air temperature (IAT) sensor – circuiU
intermittent voltage low | Wiring, IAT sensor |
| P1114 | Engine coolant temperature (ECT) sensor – circuiU intermittent voltage low | Wiring, ECT sensor |
| P1115 | Engine coolant temperature (ECT) sensor – circuit/ intermittent voltage high | Wiring, ECT sensor |
| P1121 | Throttle position (TP) sensor – circuit/
intermittent voltage high | Wiring, TP sensor |
| P1122 | Throttle position (TP) sensor- circuiU
intermittent voltage low | Wiring, TP sensor |
| P1133 | Heated oxygen sensor (H02S) – RH front – insufficient switching | Exhaust system, wiring, H02S, ECM |
| P1134 | Heated oxygen sensor (H02S) – RH front – slow operation | Exhaust system, wiring, H02S, ECM |
| P1153 | Heated oxygen sensor (H02S) – LH front – insufficient switching | Exhaust system, wiring, H02S, ECM |
| P1154 | Heated oxygen sensor (H02S) – LH front- slow operation | Exhaust system, wiring, H02S, ECM |
| P1171 | Fuel system – mixture lean under acceleration | Fuel pump/strainer, incorrect fuel |
| P1390 | G-force sensor – intermittent voltage low | Wiring, G-force sensor |
| P1391 | G-force sensor – performance problem | Seal damaged/missing, incorrectly installed, wiring, G-force sensor, ECM |
| P1392 | G-force sensor – voltage low | Wiring, G-force sensor, ECM |
| P1393 | G-force sensor- voltage high | Wiring, G-force sensor, ECM |
| P1394 | G-force sensor – intermittent voltage high | Wiring, G-force sensor |
| P1406 | Exhaust gas recirculation (EGR) valve position sensor – circuit problem | Wiring, EGR valve/position sensor, ECM |
| P1441 | Evaporative emission (EVAP) canister purge system – flow detected | Wiring, EVAP solenoid, vacuum switch, ECM |
| P1442 | Evaporative emission (EVAP) canister purge system – vacuum switch malfunction | Wiring, vacuum switch, ECM |
| P1508 | Idle air control (lAC) system – low RPM | Intake system, throttle body, hose leak, wiring, lAC valve, ECM |
| P1509 | Idle air control (lAC) system – high RPM | Hose leak, throttle body, crankcase vent valve, wiring, lAC valve, ECM |
| P1618 | Engine control module (ECM) – internal fault | ECM |
| P1640 | Engine control module (ECM) – internal fault | Wiring, ECM |
| P1790 | AT – engine control module (ECM) | ECM/programming |
| P1792 | AT – engine control module (ECM) | ECM/programming |
| P1835 | AT- kick-down switch always ON | Wiring, kick-down switch, ECM |
| P1850 | AT – brake band solenoid | Wiring, brake band solenoid, ECM |
| P1860 | AT – torque converter clutch (TCC) solenoid | Wiring, TCC solenoid, ECM |
| P1870 | Transmission slip | Range switch, mechanical failure, engine speed signal incorrect |