LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2004 >> Wrangler SE, Automatic >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Engine Performance DTCS
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Performance DTCS

ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description
P0031 O2 SENSOR 1/1 HEATER CIRCUIT LOW
P0032 O2 SENSOR 1/1 HEATER CIRCUIT HIGH
P0037 O2 SENSOR 1/2 HEATER CIRCUIT LOW
P0038 O2 SENSOR 1/2 HEATER CIRCUIT HIGH
P0051 O2 SENSOR 2/1 HEATER CIRCUIT LOW
P0052 O2 SENSOR 2/1 HEATER CIRCUIT HIGH
P0071 AMBIENT/BATTERY TEMP SENSOR PERFORMANCE
P0107 MAP SENSOR VOLTAGE TOO LOW
P0108 MAP SENSOR VOLTAGE TOO HIGH
P0111 INTAKE AIR TEMP PERFORMANCE
P0112 INTAKE AIR TEMP SENSOR VOLTAGE TOO LOW
P0113 INTAKE AIR TEMP SENSOR VOLTAGE TOO HIGH
P0118 ENGINE COOLANT TEMP SENSOR VOLTAGE TOO HIGH
P0121 TP SENSOR VOLTAGE DOES NOT AGREE WITH MAP SENSOR
P0122 THROTTLE POSITION SENSOR VOLTAGE TOO LOW
P0123 THROTTLE POSITION SENSOR VOLTAGE TOO HIGH
P0125 CLOSED LOOP TEMP NOT REACHED
P0131 O2 SENSOR 1/1 CIRCUIT VOLTAGE LOW
P0137 O2 SENSOR 1/2 CIRCUIT VOLTAGE LOW
P0151 O2 SENSOR 2/1 CIRCUIT VOLTAGE LOW
P0157 O2 SENSOR 2/2 CIRCUIT VOLTAGE LOW
P0132 O2 SENSOR 1/1 CIRCUIT VOLTAGE HIGH
P0138 O2 SENSOR 1/2 CIRCUIT VOLTAGE HIGH
P0152 O2 SENSOR 2/1 CIRCUIT VOLTAGE HIGH
P0158 O2 SENSOR 2/2 CIRCUIT VOLTAGE HIGH
P0133 O2 SENSOR 1/1 SLOW RESPONSE
P0139 O2 SENSOR 1/2 SLOW RESPONSE
P0153 O2 SENSOR 2/1 SLOW RESPONSE
P0159 O2 SENSOR 2/2 SLOW RESPONSE
P0135 O2 SENSOR 1/1 HEATER FAILURE
P0141 O2 SENSOR 1/2 HEATER FAILURE
P0155 O2 SENSOR 2/1 HEATER FAILURE
P0161 O2 SENSOR 2/2 HEATER FAILURE
P0136 O2 SENSOR 1/2 HEATER CIRCUIT MALFUNCTION
P0171 1/1 FUEL SYSTEM LEAN
P0174 2/1 FUEL SYSTEM LEAN
P0172 1/1 FUEL SYSTEM RICH
P0175 2/1 FUEL SYSTEM RICH
P0201 INJECTOR #1 CONTROL CIRCUIT
P0202 INJECTOR #2 CONTROL CIRCUIT
P0203 INJECTOR #3 CONTROL CIRCUIT
P0204 INJECTOR #4 CONTROL CIRCUIT
P0205 INJECTOR #5 CONTROL CIRCUIT
P0206 INJECTOR #6 CONTROL CIRCUIT
P0300 MULTIPLE CYLINDER MIS-FIRE
P0301 CYLINDER #1 MISFIRE
P0302 CYLINDER #2 MISFIRE
P0303 CYLINDER #3 MISFIRE
P0304 CYLINDER #4 MISFIRE
P0305 CYLINDER #5 MISFIRE
P0306 CYLINDER #6 MISFIRE
P0320 NO CRANK REFERENCE SIGNAL AT PCM
P0340 NO CAM REFERENCE SIGNAL AT PCM
P0351 IGNITION COIL # 1 PRIMARY CIRCUIT
P0352 IGNITION COIL # 2 PRIMARY CIRCUIT
P0353 IGNITION COIL # 3 PRIMARY CIRCUIT
P0420 1/1 CATALYTIC CONVERTER EFFICIENCY
P0420 2/1 CATALYTIC CONVERTER EFFICIENCY
P0441 EVAP PURGE FLOW MONITOR
P0442 EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
P0455 EVAP LEAK MONITOR LARGE LEAK DETECTED
P0456 EVAP LEAK MONITOR SMALL (0.020) LEAK DETECTED
P0443 EVAP PURGE SOLENOID CIRCUIT
P0460 FUEL LEVEL UNIT NO CHANGE OVER MILES
P0461 FUEL LEVEL UNIT NO CHANGE OVER TIME
P0462 FUEL LEVEL SENDING UNIT VOLTAGE TOO LOW
P0463 FUEL LEVEL SENDING UNIT VOLTAGE TOO HIGH
P0500 NO VEHICLE SPEED SIGNAL CIRCUIT
P0505 IDLE AIR CONTROL MOTOR CIRCUITS
P0523 OIL PRESSURE VOLTAGE TOO HIGH
P0551 POWER STEERING SWITCH FAILURE
P0601 PCM INTERNAL CONTROLLER FAILURE
P0622 GENERATOR FIELD NOT SWITCHING PROPERLY
P0645 A/C CLUTCH RELAY CIRCUIT
P0700 EATX CONTROLLER PRESENT
P1195 1/1 O2 SENSOR SLOW DURING CATALYST MONITOR
P1195 2/1 O2 SENSOR SLOW DURING CATALYST MONITOR
P1281 ENGINE IS COLD TOO LONG
P1282 FUEL PUMP/SYSTEM RELAY CONTROL CIRCUIT
P1294 TARGET IDLE NOT REACHED
P1296 NO 5-VOLTS TO MAP SENSOR
P1297 NO CHANGE IN MAP FROM START TO RUN
P1388 AUTO SHUTDOWN RELAY CONTROL CIRCUIT
P1389 NO ASD RELAY OUTPUT VOLTAGE AT PCM
P1391 INTERMITTENT LOSS OF CMP OR CKP
P1398 MIS-FIRE ADAPTIVE NUMERATOR AT LIMIT
P1486 EVAP LEAK MONITOR PINCHED HOSE FOUND
P1489 HIGH SPEED FAN RELAY CONTROL CIRCUIT
P1490 LOW SPEED FAN RELAY CONTROL CIRCUIT
P1491 COOLING FAN RELAY CONTROL CIRCUIT
P1492 BATTERY TEMPERATURE SENSOR VOLTAGE TOO HIGH
P1493 BATTERY TEMPERATURE SENSOR VOLTAGE TOO LOW
P1494 LEAK DETECTION PUMP SW OR MECHANICAL FAULT
P1495 LEAK DETECTION PUMP SOLENOID CIRCUIT
P1594 CHARGING SYSTEM VOLTAGE TOO HIGH
P1595 SPEED CONTROL SOLENOID CIRCUITS
P1595 SPD CTRL PWR RELAY; OR S/C 12V DRIVER CKT
P1596 SPEED CONTROL SWITCH ALWAYS HIGH
P1597 SPEED CONTROL SWITCH ALWAYS LOW
P1682 CHARGING SYSTEM VOLTAGE TOO LOW
P1685 WRONG OR INVALID KEY MSG RECEIVED FROM SKIM
P1686 NO SKIM BUS MESSAGE RECEIVED
P1687 NO CLUSTER BUS MESSAGE
P1692 CLUSTER SOFTWARE MISMATCH
P1696 PCM FAILURE EEPROM WRITE DENIED
P1698 NO BUS MESSAGE FROM TRANS CONTROL MODULE
P1899 P/N SWITCH PERFORMANCE