OBDII Jeep Code Definitions.
Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.
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| Jeep Codes | ||
|---|---|---|
| Trouble Code | Fault Location | Probable Cause |
| P0455 | EVAP System Large Leak | P1000 – P1099 (Fuel and air metering and auxiliary emission control) |
| P1001 | Ignition Key Off Timer Performance Too Fast | |
| P1002 | Ignition Key Off Timer Performance Too Slow | |
| P1004 | Short Runner Valve Control Performance | |
| P1005 | Manifold Tunning Valve Control Performance | |
| P1011 | Fuel Pump Delivery Pressure Too Low | |
| P1012 | Fuel Pump Delivery Pressure Too High | P1100 – P1199 (Fuel and air metering) |
| P1101 | Airbag Control Module Signal Received | |
| P1102 | Viscous/Cabin Heater Relay Circuit Condition | |
| P1107 | BARO Solenoid Performance | |
| P1110 | Decreased engine performance -high intake air temperature | Wiring open circuit/short to positive, ground wire defective, IAT sensor, ECT sensor, cooling system, high engine bay temperature, ECM |
| P1112 | Intake Air Temperature Sensor Circuit Intermittent Low Voltage | |
| P1115 | Engine coolant temperature (ECT) sensor/intake air temperature (IAT) sensor signal variation | Wiring, ECT sensor, IAT sensor, ECM |
| P1128 | Closed loop fuel control not achieved -bank 1 | Wiring, H02S, fuel system, MAP sensor, ECM |
| P1129 | Closed loop fuel control not achieved -bank 2 | Wiring, H02S, fuel system, MAP sensor, ECM |
| P1140 | Vacuum Reservoir Solenoid Circuit Condition | |
| P1142 | Fuel Pressure Solenoid Circuit Condition | |
| P1143 | Fuel Rail Pressure Malfunction Positive Pressure Deviation | |
| P1144 | Fuel Rail Pressure Malfunction Positive Volume Deviation | |
| P1148 | Fuel Rail Pressure Malfunction Pressure Drop In Over-run | |
| P1151 | Fuel Rail Pressure Malfunction Maximum Positive Deviation | |
| P1152 | Fuel Rail Pressure Malfunction Positive Deviation Fuel Pressure Solenoid Setpoint | |
| P1153 | Fuel Rail Pressure Malfunction Negative Deviation Fuel Pressure Solenoid Setpoint | |
| P1154 | Fuel Rail Pressure Malfunction Rail Pressure Is Too Low | |
| P1155 | Fuel Rail Pressure Malfunction Rail Pressure Is Too High | |
| P1159 | Improper Start Attempt | |
| P1160 | Ignition Voltage | |
| P1167 | Capacitor Voltage 1 | |
| P1169 | ECM A/D Converter Error | |
| P1187 | Throttle Inlet Pressure/MAP Correlation | |
| P1188 | Throttle Inlet Pressure Sensor Performance | |
| P1189 | Throttle Inlet Pressure Sensor Low | |
| P1190 | Throttle Inlet Pressure Sensor High | |
| P1192 | Intake air temperature (IAT) sensor -voltage low | Wiring, IAT sensor, ECM |
| P1193 | Intake air temperature (IAT) sensor -voltage high | Wiring, IAT sensor, ECM |
| P1194 | Heated oxygen sensor (H02S), heater control -circuit malfunction | Wiring, H02S, ECM |
| P1195 | Heated oxygen sensor (H02S) 1, bank 1 slow response | Wiring, heating inoperative, exhaust leak, H02S |
| P1196 | Heated oxygen sensor (H02S) 1, bank 2 slow response | Wiring, heating inoperative, exhaust leak, H02S |
| P1197 | Heated oxygen sensor (H02S) 2, bank 1 slow response | Wiring, heating inoperative, exhaust leak, H02S | P1200 – P1299 (Fuel and air metering – injector circuit) |
| P1222 | Pedal Position Sensor 1 CKT Plausibility | |
| P1234 | Pedal Position Sensor 2 CKT Plausibility | |
| P1239 | Engine Oil Temperature Too Low | |
| P1250 | Vacuum Reservoir Solenoid Open Circuit | |
| P1251 | Vacuum Reservoir Solenoid Short To Ground | |
| P1252 | Vacuum Reservoir Solenoid Short Circuit | |
| P1260 | Glow Plug #1 Circuit | |
| P1261 | Glow Plug #1 Control Circuit Low | |
| P1262 | Glow Plug #2 Circuit | |
| P1263 | Glow Plug #2 Control Circuit Low | |
| P1264 | Glow Plug #3 Circuit | |
| P1265 | Glow Plug #3 Control Circuit Low | |
| P1266 | Glow Plug #4 Circuit | |
| P1267 | Glow Plug #4 Control Circuit Low | |
| P1270 | Intake manifold air control -performance | Wiring, intake manifold air control actuator, ECM |
| P1272 | A/C Clutch Control Circuit 2 Low | |
| P1273 | AlC compressor clutch control circuit 2 (PCM) circuit high | Wiring, AlC compressor clutch, PCM |
| P1274 | A/C Clutch Control Circuit 2 Open | |
| P1275 | AlC compressor clutch control circuit 2 (PCM) over-current | Wiring, AlC compressor clutch, poor connection, PCM |
| P1277 | Starter control circuit 2 (PCM) -short circuit to ground | Wiring, starter motor, PCM |
| P1278 | Starter control circuit 2 (PCM) -short circuit to positive | Wiring, starter motor, PCM |
| P1279 | Starter control circuit 2 (PCM) -open circuit | Wiring, starter motor, PCM |
| P127A | Starter control circuit 2 (PCM) over-current | Wiring, poor connection, starter motor, PCM |
| P127C | Fuel pump control circuit 2 (PCM) -short circuit to ground | Wiring, fuel pump, PCM |
| P127D | Fuel pump control circuit 2 (PCM) -short circuit topower | Wiring, fuel pump, PCM |
| P127E | Fuel pump control circuit 2 (PCM) -open circuit | Wiring, fuel pump, PCM |
| P127F | Fuel pump control circuit 2 (PCM) over-current | Wiring, poor connection, fuel pump, PCM |
| P1280 | Fuel pump relay -circuit malfunction | Wiring, fuel pump relay |
| P1281 | Engine temperature -low for long period | Wiring, cooling system, coolant thermostat, ECTsensor |
| P1282 | Fuel pump relay -wiring open/short circuit | Wiring, fuel pump relay |
| P1288 | Intake manifold air control solenoid (short runner) -wiring open/short circuit | Wiring, intake manifold air control solenoid (short runner) |
| P1289 | Intake manifold air control solenoid -wiring open/short circuit | Wiring, intake manifold air control solenoid |
| P1294 | Idle speed control (ISC) system -rpm lower/higher than expected | Wiring, air leak, throttle valve tight/sticking, lAC valve |
| P1295 | Throttle position (TP) sensor -no 5 volt supply | Wiring, TP sensor, ECM |
| P1296 | Manifold absolute pressure (MAP) sensor no 5 volt supply | Wiring, MAP sensor, ECM |
| P1297 | Manifold absolute pressure (MAP) sensor | Wiring, hose connection(s), MAP sensor |
| P1298 | System too lean -at prolonged wide open throttle | Intake/exhaust leak, MAP sensor, fuel pressure/pump, injector(s), H02S |
| P1299 | Manifold absolute pressure (MAP) sensor/throttle position (TP) sensor | Intake leak, hose connection(s), MAP sensor, TP sensor | P1300 – P1399 (Ignition system or misfire) |
| P1386 | Knock Sensor System Failure | |
| P1388 | Engine control relay -wiring open/short circuit | Wiring, engine control relay |
| P1389 | Engine control relay -wiring open circuit | Wiring, engine control relay |
| P1390 | Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -signal synchronisation | Timing belt loose/jumped position, CKP sensor, CMP sensor |
| P1391 | Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -intermittent signal | Wiring, poor connection, air gap, CKP sensor, CMP sensor |
| P1398 | Engine control module (ECM) -misfire detection limit reached | Wiring, poor connection, CKP sensor | P1400 – P1499 (Emission control) |
| P1400 | Manifold Differential Pressure sensor condition | |
| P1403 | Exhaust gas recirculation (EGR) valve position sensor no 5 volt supply | Wiring, ECM |
| P1404 | Exhaust gas recirculation (EGR) valve position sensor malfunction | Wiring, exhaust gas recirculation (EGR) valve,ECM |
| P1411 | Cylinder cut-out solenoid 1 -malfunction | Wiring, cylinder cut-out solenoid, oil pressure, ECM |
| P1414 | Cylinder cut-out solenoid 4 -malfunction | Wiring, cylinder cut-out solenoid, oil pressure,ECM |
| P1416 | Cylindercut-out solenoid 6 malfunction | Wiring, cylinder cut-out solenoid, oil pressure, ECM |
| P1417 | Cylinder cut-out solenoid 7 malfunction | Wiring, cylinder cut-out solenoid, oil pressure, ECM |
| P1451 | Diesel particulate filter (DPF) -performance | Wiring, exhaust, DPF pressure differential sensor,DPF, hose |
| P1452 | Diesel particulate filter (DPF) pressure differential sensor hose performance | Wiring, exhaust, DPF pressure differential sensor,DPF, hose |
| P1453 | Diesel particulate filter (DPF) pressure differential sensor -hose blocked | Wiring, exhaust, DPF pressure differential sensor,DPF, hose |
| P1454 | Diesel particulate filter (DPF) pressure differential sensor -flow too high | Wiring, exhaust, DPF pressure differential sensor, DPF, hose |
| P1475 | Engine control module (ECM) -auxiliary 5 voltoutput high | Wiring, ECM |
| P1476 | Secondary air injection (AIR) system -insufficientflow detected | AIR pump, AIR valve, AIR hose(s) |
| P1477 | Secondary air injection (AIR) system -excessive flow detected | AIR pump, AIR valve, AIR hose(s), ECM |
| P1480 | Positive crankcase ventilation (PCV) solenoid -wiring open/short circuit | Wiring, PCV solenoid |
| P1481 | Transmission control module (TCM) -misfire detection | Wiring, poor connection, CKP sensor, TCM |
| P1482 | Catalytic converter temperature sensor -low input | Wiring short circuit to ground, catalytic converter temperature sensor, ECM |
| P1483 | Catalytic converter temperature sensor, high input -wiring short circuit to positive | Wiring, catalytic converter temperature sensor, ECM |
| P1484 | Catalytic converter -overheating | Wiring, engine misfire, catalytic converter, catalytic converter temperature sensor |
| P1485 | Secondary air injection (AIR) solenoid -circuit malfunction | Wiring, AIR solenoid, ECM |
| P1486 | Evaporative emission (EVAP) system blockage detected | Hose connection(s), hose blocked/trapped, EVAP canister |
| P1487 | Engine coolant blower motor relay, high speed -wiring open/short circuit | Wiring, engine coolant blower motor relay (high speed) |
| P1488 | Engine control module (ECM) -auxiliary 5 volt output low | Wiring, ECM |
| P1489 | AlC condenser blower motor relay, high speed -wiring open/short circuit | Wiring, engine coolant blower motor relay (high speed) |
| P1490 | Engine coolant blower motor relay, low speed -wiring open/short circuit | Wiring, engine coolant blower motor relay (low speed) |
| P1491 | Engine coolant blower motor relay open/shortcircuit | Wiring, engine coolant blower motor |
| P1492 | Ambient/battery temperature sensor -voltage high | Wiring, ambient/battery temperature sensor |
| P1493 | Ambient/battery temperature sensor -voltage low | Wiring, ambient/battery temperature sensor |
| P1494 | Evaporative emission (EVAP) leak detectionpump -pressure switch | Wiring, hose leak/blockage, EVAP leak detection pump |
| P1495 | Evaporative emission (EVAP) leak detection pump solenoid -wiring open/short circuit | Wiring, hose leak/blockage, EVAP leak detection pump solenoid |
| P1496 | Engine control module (ECM) -5 volt output low | ECM |
| P1498 | Engine coolant blower motor relay, high speed 3 -wiring open/short circuit | Wiring, engine coolant blower motor relay (highspeed 3) |
| P1499 | Engine coolant blower coupling solenoid -wiring open/short circuit | Wiring, engine coolant blower coupling solenoid | P1500 – P1599 (Vehicle or idle speed control) |
| P1500 | Alternator Terminal Circuit Conditions | |
| P1501 | Vehicle over-speed condition -rear axle speed greater than front axle | Wiring, VSS, mechanical fault, ECM |
| P1502 | Vehicle over-speed condition -front axle speed greater than rear axle | Wiring, VSS, mechanical fault, ECM |
| P1513 | Starter request circuit -switch stuck | Wiring short to voltage, ECM |
| P1521 | Engine oil sensor module -malfunction | Wiring, connectors, oil quality, oil level |
| P1524 | Oil Pressure Out Of Range Camshaft Advance / Retard Disable | |
| P1572 | Brake pedal position (BPP) switch -circuit malfunction | BPP switch adjustment, wiring, BPP switch |
| P1573 | Brake pedal position (BPP) switch -circuit malfunction | BPP switch adjustment, wiring, BPP switch |
| P1593 | Cruise control system, multi-function input A circuit stuck | Wiring, poor connection, multi-function switch, mechanical fault, ECM |
| P1594 | Alternator -voltage high | Wiring, battery, alternator |
| P1595 | Cruise control -wiring open/short circuit | Wiring, hoses, cruise control master switch, cruisecontrol vacuum switching valve |
| P1596 | Cruise control master switch -high voltage | Wiring, cruise control master switch |
| P1597 | Cruise control master switch -low voltage | Wiring, cruise control master switch |
| P1598 | AlC refrigerant pressure sensor -high input | Wiring, AlC refrigerant pressure too high (coolingfault/incorrectly charged), AlC refrigerant pressure sensor |
| P1599 | AlC refrigerant pressure sensor -low input | Wiring, AlC refrigerant pressure too low(incorrectly charged), AlC refrigerant pressure sensor | P1600 – P1699 (ECM – computer output circuit) |
| P1602 | Engine control module (ECM) not programmed | New ECM not programmed, incorrectly programmed, ECM |
| P1603 | Engine control module (ECM) -malfunction | Wiring, fuse(s), ECM |
| P1604 | Engine control module (ECM) -RAM read/writeerror | ECM |
| P1607 | Engine control module (ECM) -shut down timer error | ECM |
| P1618 | Engine control module (ECM) -primary 5 volt output erratic | Wiring, poor connection, oil pressure sensor, APP sensor, CKP sensor, throttle control unit, TPS sensor, ECM |
| P1628 | Engine control module (ECM) -auxiliary 5 volt output erratic | Wiring, poor connection, APP sensor, CMP sensor,EGR solenoid, EGR valve position sensor, MAP sensor, ECM |
| P1631 | TCM Internal Processor Clock Performance | |
| P1639 | TCM Internal CAN 2 RAM Performance | |
| P1646 | Engine coolant hydraulic blower motor solenoid/circuit high -circuit malfunction | Wiring, fuse, engine coolant hydraulic blower motorsolenoid, ECM |
| P1647 | Engine coolant hydraulic blower motorsolenoid/circuit low -circuit malfunction | Wiring, fuse, engine coolant hydraulic blower motor solenoid, ECM |
| P1648 | Glow plug control module/supply circuit circuit malfunction | Wiring, fuse, ECM |
| P1649 | Glow plug control module/supply circuit circuit malfunction | Wiring, fuse, ECM |
| P1652 | Data bus, engine control module (ECM)/transmission control module (TCM) -no communication | Wiring, CAN data bus, ECMITCM |
| P1680 | Clutch pedal position (CPP) switch -circuit malfunction | Wiring, CPP switch, ECM |
| P1681 | CAN data bus, instrumentation -no signal | Wiring, instrumentation control module |
| P1682 | Alternator -voltage low | Wiring, battery, alternator drive belt, alternator |
| P1683 | Cruise control | Wiring, cruise control vacuum switching valve |
| P1684 | Engine control module (ECM) -supply voltage disconnected within last 50 ignition switch ON-OFF cycles | Wiring, battery |
| P1685 | Key not programmed into immobilizer control module | Wiring, ignition key not matched/damaged, immobilizer control module |
| P1686 | CAN data bus, immobilizer control module no signal | Wiring, immobilizer control module |
| P1687 | CAN data bus, instrumentation -no signal | Wiring, instrumentation control module (mechanical) |
| P1688 | Internal Fuel Injection Pump Controller Failure | |
| P1689 | No Communication Between ECM and Injection Pump Module Data | |
| P1690 | Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor | |
| P1692 | Fault detected in engine control module (ECM) | Companion trouble code detected in ECM |
| P1693 | Fault detected in companion engine control module (ECM) | Companion trouble code detected in ECM |
| P1694 | CAN data bus, ECM -no signal | Wiring, ECM |
| P1695 | CAN data bus, BCM -no signal | Wiring, SCM |
| P1696 | Engine control module (ECM) -EEPROM error | ECM |
| P1697 | Engine control module (ECM) -EEPROM error | ECM |
| P1698 | CAN data bus, TCM -no signal | Wiring, TCM |
| P1699 | CAN data bus, AlC control module -no signal | Wiring, AlC control module | P1700 – P1799 (Transmission) |
| P1715 | Restricted port in T3 range | Other trouble code(s) stored, transmission fluid level, transmission shift linkage adjustment D |
| P1719 | Skip shift solenoid -wiring open/short circuit | Wiring, skip shift solenoid |
| P1736 | Transmission -gear/input speed/output speed ratioerror | Transmission fluid level, wiring, input shaft speed (ISS) sensor, output shaft speed (055) sensor, transmission mechanical fault |
| P1740 | Torque converter clutch (Tee)/overdrive solenoid -performance problem | TCC, overdrive solenoid, transmission mechanical fault |
| P1745 | Line Pressure Too High For Too Long | |
| P1756 | Governor pressure not equal to target (15-20 PSI)-mid pressure malfunction | Signal wire open/short circuit, valve body, sensor supply wire open circuit, transmission fluid level, governor pressure solenoid, transmission mechanical fault, ECM -no 5 volt supply |
| P1757 | Govemor pressure not equal to target (15-20 PSI) -zero pressure malfunction | Signal wire open/short circuit, valve body, sensor supply wire open circuit, transmission fluid level, governor pressure solenoid, transmission mechanical fault, ECM -no 5 volt supply |
| P1762 | Govemor pressure sensor -incorrect signal | Signal wire short circuit to ground/positive, supply wire open/short circuit, transmission fluid level, governor pressure solenoid, governor pressure sensor, ECM |
| P1763 | Govemor pressure sensor -signal high | Signal wire short circuit to positive, supply wire open circuit, transmission fluid level, governor pressure sensor, ECM |
| P1764 | Governor pressure sensor -signal low | Signal wire short circuit to ground, supply wire open circuit, transmission fluid level, governor pressure sensor, ECM |
| P1765 | Transmission system relay -wiring open/short circuit | Wiring, transmission system relay, ECM |
| P1775 | Solenoid switch valve locked in Tee (torqueconverter clutch) position -wiring open/short circuit | Wiring, transmission system relay, transmission fluid level low, UR pressure switch, solenoid switch valve |
| P1776 | Solenoid switch valve locked in UR (low/reverse) position -wiring open/short circuit | Wiring, transmission system relay, transmission fluid level low, UR pressure switch, solenoid switch valve |
| P1781 | Over Drive Pressure Switch Sense Circuit | |
| P1782 | 2/4-OD Pressure Switch Circuit | |
| P1787 | OD Hydraulic Pressure Test Failure | |
| P1790 | Fault immediately after shift | Speed ratio error, transmission mechanical fault |
| P1793 | Torque reduction communication error -wiring open/short circuit | Wiring, ECMITCM |
| P1794 | Transmission speed sensor -ground circuit | Wiring open circuit, TCM, input shaft speed (ISS) sensor, output shaft speed (055) sensor |
| P1797 | Manual shift overheat | Wiring, transmission fluid level low, transmission cooling fan -if fitted, transmission fluid temperature (TFT) sensor | P1800 – P1899 (Transmission) |
| P1830 | Clutch pedal position (CPP) switch override relay-circuit malfunction | Wiring, CPP switch override relay, ECM |
| P1861 | Transfer tube disconnected | Wiring open circuit/short to ground, damaged fuel tank, fuel level sender |
| P1897 | Engine speed calculation error | ECM |
| P1899 | Park/neutral position (PNP) switch -input circuit malfunction | Wiring, PNP switch, ECM | P1900 – P1999 (Transmission) |
| P1946 | Fire Prevention System Crash Event Detected | Car Had An Accident And The Inertia Switch Has Operated | P1C00 – P1C99 (Hybrid Propulsion) |
| P1CEA | Boost Side EVAP Purge System Performance | |
| U110A | Controller area network (CAN) data buscommunication malfunction | Wiring, steering column control module, multifunction control module, ECM |
| U110C | Controller area network (CAN) data bus communication malfunction | Wiring, fuel level sensor, multifunction control module, ECM |
| U110E | Outside air temperature sensor communication malfunction | Wiring, outside air temperature sensor, multifunction control module, ECM |
| U1110 | Wheel speed sensor -communication malfunction | Wiring, speed sensor, anti-lock brake system (ABS) control module, ECM |
| U1111 | Controller area network (CAN) data buscommunication malfunction | Wiring, multifunction control module, ECM |
| U1113 | AlC pressure sensor -communication malfunction | Wiring, multifunction control module, ECM |
| U1120 | Wheel speed sensor -communication malfunction | Wiring, speed sensor, anti-lock brake system (ASS) control module, ECM |
| U1403 | Control area network (CAN) data bus -fuel level -signal implausible | Wiring, instrument panel, multifunction control module, ECM |
| U1411 | Controller area network (CAN) data bus/fuel level -communication malfunction | Wiring, instrumentation control module,multifunction control module, ECM |
| U1412 | Wheel speed sensor -CAN data communication malfunction | Wiring, wheel speed sensor, ABS control module,ECM |
| U1413 | Controller area network (CAN) data buslinstrument panel -signal implausible | Wiring, instrumentation control module,multifunction control module, ECM |
| U1417 | Wheel speed sensor, left -CAN data communication malfunction | Wiring, wheel speed sensor, ASS control module,ECM |
| U1418 | Wheel speed sensor, right -CAN data communication malfunction | Wiring, wheel speed sensor, ASS control module, ECM |