Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Chrysler Neon LE, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| P0071 | AMBIENT TEMP SENSOR PERFORMANCE |
| P0106 | BAROMETRIC PRESSURE OUT OF RANGE |
| P0107 | MAP SENSOR VOLTAGE TOO LOW |
| P0108 | MAP SENSOR VOLTAGE TOO HIGH |
| P0117 | ECT SENSOR VOLTAGE TOO LOW |
| P0118 | ECT SENSOR VOLTAGE TOO HIGH |
| P0121 | TPS VOLTAGE DOES NOT AGREE WITH MAP |
| P0122 | THROTTLE POSITION SENSOR VOLTAGE LOW |
| P0123 | THROTTLE POSITION SENSOR VOLTAGE HIGH |
| P0131 | 1/1 O2 SENSOR SHORTED TO GROUND |
| P0132 | 1/1 O2 SENSOR SHORTED TO VOLTAGE |
| P0133 | 1/1 O2 SENSOR SLOW RESPONSE |
| P0134 | 1/1 O2 SENSOR STAYS AT CENTER |
| P0135 | 1/1 O2 SENSOR HEATER FAILURE |
| P0137 | 1/2 O2 SENSOR SHORTED TO GROUND |
| P0138 | 1/2 O2 SENSOR SHORTED TO VOLTAGE |
| P0139 | 1/2 O2 SENSOR SLOW RESPONSE |
| P0140 | 1/2 O2 SENSOR STAYS AT CENTER |
| P0141 | 1/2 O2 SENSOR HEATER FAILURE |
| P0171 | 1/1 FUEL SYSTEM LEAN |
| P0172 | 1/1 FUEL SYSTEM RICH |
| P0201 | INJECTOR #1 CONTROL CIRCUIT |
| P0202 | INJECTOR #2 CONTROL CIRCUIT |
| P0203 | INJECTOR #3 CONTROL CIRCUIT |
| P0204 | INJECTOR #4 CONTROL CIRCUIT |
| P0300 | MULTIPLE CYLINDER MISFIRE |
| P0301 | CYLINDER #1 MISFIRE |
| P0302 | CYLINDER #2 MISFIRE |
| P0303 | CYLINDER #3 MISFIRE |
| P0304 | CYLINDER #4 MISFIRE |
| P0320 | NO CRANK REFERENCE SIGNAL AT PCM |
| P0340 | NO CAM SIGNAL AT PCM |
| P0351 | IGNITION COIL #1 PRIMARY CIRCUIT |
| P0352 | IGNITION COIL #2 PRIMARY CIRCUIT |
| P0420 | 1/1 CATALYTIC CONVERTER EFFICIENCY |
| P0441 | EVAP PURGE FLOW MONITOR |
| P0442 | EVAP LEAK MONITOR MEDIUM LEAK DETECTED |
| P0443 | EVAP PURGE SOLENOID CIRCUIT |
| P0455 | EVAP LEAK MONITOR LARGE LEAK DETECTED |
| P0456 | EVAP LEAK MONITOR SMALL LEAK DETECTED |
| P0460 | FUEL LEVEL UNIT NO CHANGE OVER MILES |
| P0462 | FUEL LEVEL SENDING UNIT VOLTAGE TOO LOW |
| P0463 | FUEL LEVEL SENDING UNIT VOLTAGE TOO HIGH |
| P0500 | NO VEHICLE SPEED SENSOR SIGNAL (A/T) |
| P0500 | NO VEHICLE SPEED SENSOR SIGNAL (M/T) |
| P0508 | IAC MOTOR SENSE CIRCUIT LOW |
| P0509 | IAC MOTOR SENSE CIRCUIT HIGH |
| P0513 | INVALID SKIM KEY |
| P0600 | PCM FAILURE SPI COMMUNICATIONS |
| P0601 | PCM INTERNAL CONTROLLER FAILURE |
| P0703 | BRAKE SWITCH SENSE CIRCUIT |
| P0833 | CLUTCH RELEASED SWITCH CIRCUIT |
| P1192 | INLET AIR TEMP SENSOR VOLTAGE LOW |
| P1193 | INLET AIR TEMP SENSOR VOLTAGE HIGH |
| P1195 | 1/1 O2 SENSOR SLOW DURING CATALYST MONITOR |
| P1281 | ENGINE IS COLD TOO LONG |
| P1282 | FUEL PUMP RELAY CONTROL CIRCUIT |
| P1289 | MANIFOLD TUNE VALVE CONTROL CIRCUIT |
| P1294 | TARGET IDLE NOT REACHED |
| P1297 | NO CHANGE IN MAP FROM START TO RUN |
| P1299 | VACUUM LEAK FOUND (IAC FULLY SEATED) |
| P1388 | AUTO SHUTDOWN RELAY CONTROL CIRCUIT |
| P1389 | NO ASD RELAY OUTPUT VOLTAGE AT PCM |
| P1390 | TIMING BELT SKIPPED 1 TOOTH OR MORE |
| P1391 | INTERMITTENT LOSS OF CMP OR CKP |
| P1398 | MISFIRE ADAPTIVE NUMERATOR AT LIMIT |
| P1486 | EVAP LEAK MONITOR PINCHED HOSE FOUND |
| P1490 | LOW SPEED FAN CONTROL RELAY CIRCUIT |
| P1494 | LEAK DETECTION PUMP SW OR MECHANICAL FAULT |
| P1495 | LEAK DETECTION PUMP SOLENOID CIRCUIT |
| P1496 | 5-VOLT SUPPLY OUTPUT TOO LOW |
| P1602 | PCM NOT PROGRAMMED |
| P1653 | PCI BUS SHORTED TO GROUND |
| P1654 | PCI BUS SHORTED TO VOLTAGE |
| P1656 | PCI BUS NOT AVAILABLE |
| P1685 | WRONG OR INVALID KEY MSG RECEIVED FROM SKIM |
| P1686 | NO SKIM BUS MESSAGE RECEIVED |
| P1687 | NO CLUSTER BUS MESSAGE |
| P1696 | PCM FAILURE EEPROM WRITE DENIED |
| P1697 | PCM FAILURE SRI MILE NOT STORED |
| P1698 | NO BUS MESSAGE FROM TRANS CONTROL MODULE |
| P1899 | P/N SWITCH STUCK IN PARK OR IN GEAR |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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