www.diycardoctor.com Isuzu Factory DTC Code Definitions P1106 - Manifold absolute pressure (MAP) sensor — circuit/intermittent voltage high P1107 - Manifold absolute pressure (MAP) sensor — circuit/intermittent voltage low P1111 - Intake air temperature (IAT) sensor — circuit/intermittent voltage high P1112 - Intake air temperature (IAT) sensor — circuit/intermittent voltage low P1114 - Engine coolant temperature (ECT) sensor — circuit/intermittent voltage low P1115 - Engine coolant temperature (ECT) sensor — circuit/intermittent voltage high P1120 - Throttle motor position sensor 1 — circuit malfunction P1121 - Throttle position (TP) sensor — circuit/intermittent voltage high P1122 - Throttle position (TP) sensor — circuit/intermittent voltage low P1125 - Accelerator pedal position (APP) sensor 1/2/3 — signal malfunction P1133 - Oxygen sensor (028)/heated oxygen sensor (HO2S) 1/ bank 1 — insufficient switching P1134 - Heated oxygen sensor (HO2S) 1/ bank 1 — slow response P1137 - Heated oxygen sensor (H02s) 1/2 — voltage incorrect P1138 - Heated oxygen sensor (HO2S) 2 — voltage high P1153 - Heated oxygen sensor (H02s) 1/ bank 2 — insufficient switching P1154 - Heated oxygen sensor (HO2S) 1/ bank 2 — slow response P1167 - Fuel trim/ bank 1 — mixture too rich during deceleration P1169 - Fuel trim/ bank 2 — mixture too rich during deceleration P1171 - Fuel trim — mixture too lean during acceleration P1220 - Throttle motor position sensor 2 — circuit malfunction P1221 - Throttle motor position sensor 1/2 — signal variation P1258 - Engine coolant — excessive temperature P1271 - Accelerator pedal position (APP) sensor 1/2 — signal variation P1272 - Accelerator pedal position (APP) sensor 2/3 — signal variation P1273 - Accelerator pedal position (APP) sensor 1/3 — signal variation P1275 - Accelerator pedal position (APP) sensor 1 — circuit malfunction P1280 - Accelerator pedal position (APP) sensor 2 — circuit malfunction P1285 - Accelerator pedal position (APP) sensor 3 — circuit malfunction P1290 - Throttle position (TP) motor — forced idle mode P1295 - Throttle position (TP) motor — power management mode P1299 - Throttle position (TP) motor — forced engine shut down mode P1310 - Ignition control module (1CM) — diagnosis P1311 - Ignition control module (1CM) — ignition coil secondary coil signal/ circuit 1 P1312 - Ignition control module (1CM) — ignition coil secondary coil signal/ circuit 2 P1326 - Ignition control module (1CM) — combustion quality input signal P1336 - Crankshaft position (CKP) sensor — signal variation P1340 - Ignition control module (1CM) — cylinder identification syncronization P1345 - CKP/CMP signals — signal malfunction P1351 - Ignition control module (1CM) — signal voltage high P1361 - Ignition control module (1CM) — signal not switching P1380 - ECM to ABS communication — unusable signal P1381 - [CM to ABS communication — misfire detected P1390 - C-sensor — intermittent voltage low P1391 - C-sensor — performance P1392 - C-sensor — voltage low P1393 - C-sensor — voltage high P1394 - C-sensor — intermittent voltage high P1404 - Exhaust gas Recirculation ([CR) solenoid — valve closed P1406 - Exhaust gas Recirculation (EGR) system — circuit problem P1415 - Secondary air injection (AIR) system/ bank 1 P1416 - Secondary air injection (AIR) system/ bank 2 P1441 - Evaporative emission (EVAP) canister purge system — leak detected P1442 - Evaporative emission ([VAR) canister purge switch — voltage high P1459 - Evaporative emission (EVAP) canister purge system — incorrect flow P1481 - Engine coolant blower motor speed — malfunction P1482 - Engine coolant blower motor clutch — incorrect voltage P1484 - Engine coolant blower motor relay — speed signal variation P1508 - Idle air control (lAC) system — low RPM P1509 - Idle air control (IAC) system — high RPM P1512 - Throttle control unit — signal variation P1514 - Throttle position (TP) sensor/mass air flow(MAF) sensor — signal variation P1515 - Throttle command/actual throttle position — signal variation P1516 - Throttle position motor — position performance P1518 - Throttle control module/engine control module(ECM) — communication malfunction P1520 - Park/neutral position (PNP) switch — circuit malfunction P1523 - Throttle position motor — closed position performance P1546 - A/C compressor clutch relay — circuit malfunction P1571 - Traction control system (TCS)/ torque request signal — malfunction P1574 - Brake pedal position (BPP) switch — circuit malfunction P1600 - Serial communication — malfunction P1601 - Serial communication — malfunction P1602 - ECM to ABS communication — circuit malfunction P1618 - Engine control module (ECM) — internal fault P1621 - Engine control module (ECM) — internal memory performance P1625 - Engine control module (ECM) — unexpected reset P1626 - IMMOBILIZER system — ECM to body control module communication malfunction P1627 - Engine control module (ECM) — analogue/digital converter P1630 - Engine control module (ECM)/IMMOBILIZER code — learning mode P1631 - IMMOBILIZER system — password/code incorrect P1632 - IMMOBILIZER system — fueling disabled P1633 - Engine control module (ECM)/ignition supply voltage P1635 - Sensor supply voltage — circuit A malfunction P1636 - Engine control module (ECM) — RAM stack P1637 - Alternator ‘L’ terminal — circuit malfunction P1638 - Alternator field circuit — signal out of range P1639 - Sensor supply voltage — circuit B malfunction P1640 - Engine control module/ output driver 1 — supply voltage high P1646 - Sensor supply voltage — circuit C malfunction P1650 - Engine control module quad driver/output driver P1680 - Engine control module (ECM) — malfunction P1681 - Engine control module (ECM) — malfunction P1682 - Throttle control module/engine control module(ECM) — ignition power supply variation P1683 - Engine control module (ECM) — malfunction P1689 - Traction control system (TCS)/ delivered torque signal — malfunction P1790 - Engine control module (ECM) — AT ROM check sum error P1792 - AT — AT EEPROM checksum error P1810 - AT — manual valve position pressure switch malfunction P1835 - AT — kick-down switch P1860 - AT — torque converter clutch (TCC)solenoid circuit P1870 - AT — component slipping P1875 - AT — component slipping U1041 - ECM to ABS communication — no signal U1152 - Class 2 communication ID missing U1300 - Class 2 communication — low voltage U1301 - Class 2 communication — high voltage