Hey Neon OBD II Onboard Diagnostics
Neons made from 1996 on are equipped with the OBD II system, which means you should be able to access all the generic OBD codes with an OBD II-compliant scan tool. There also are a bunch of "enhanced" codes on Neon models too, which include the following:
P1195 - Heated O2 sensor 1 bank 1 slow response
P1196 - Heated O2 sensor 1 bank 2 slow response
P1281 - Engine temperature too low (bad thermostat or sensor)
P1282 - Fuel pump relay
P1289 - Intake manifold air control solenoid
P1294 - Idle speed control system out of normal range
P1297 - MAP sensor circuit
P1298 - Engine lean
P1299 - MAP/throttle position sensor
P1388 - Engine control relay
P1389 - Engine control relay
P1390 - Timing belt jumped 1 tooth or more
P1391 - Crankshaft position sensor intermittent signal
P1398 - Engine Control Module misfire detection limit reached
P1403 - EGR valve position sensor no 5-volt supply
P1478 - Ambient/battery temperature sensor circuit
P1486 - Evaporative Emission system blockage detected
P1489 - Engine cooling fan motor relay high speed circuit
P1490 - Engine cooling fan motor relay low speed circuit
P1491 - Engine cooling fan motor relay high/low circuits
P1492 - Ambient/battery temperature sensor voltage high
P1493 - Ambient/battery temperature sensor voltage low
P1494 - EVAP leak detection pump pressure switch
P1495 - EVAP leak detection pump solenoid
P1496 - ECM 5-volt output reference voltage low
P1594 - Alternator output voltage too high
P1595 - Cruise control
P1686 - Alternator output voltage too low
P1685 - Ignition key not programmed into immobilizer module
P1686 - CAN data bus, immobilizer module no signal
P1687 - CAN data bus, no instrumentation signal
P1969 - ECM EEPROM error
P1697 - ECM EEPROM error
P1698 - CAN data bus, no transmission module signal
P1899 - Park/neutral switch input circuit malfunction
Neons made from 1996 on are equipped with the OBD II system, which means you should be able to access all the generic OBD codes with an OBD II-compliant scan tool. There also are a bunch of "enhanced" codes on Neon models too, which include the following:
P1195 - Heated O2 sensor 1 bank 1 slow response
P1196 - Heated O2 sensor 1 bank 2 slow response
P1281 - Engine temperature too low (bad thermostat or sensor)
P1282 - Fuel pump relay
P1289 - Intake manifold air control solenoid
P1294 - Idle speed control system out of normal range
P1297 - MAP sensor circuit
P1298 - Engine lean
P1299 - MAP/throttle position sensor
P1388 - Engine control relay
P1389 - Engine control relay
P1390 - Timing belt jumped 1 tooth or more
P1391 - Crankshaft position sensor intermittent signal
P1398 - Engine Control Module misfire detection limit reached
P1403 - EGR valve position sensor no 5-volt supply
P1478 - Ambient/battery temperature sensor circuit
P1486 - Evaporative Emission system blockage detected
P1489 - Engine cooling fan motor relay high speed circuit
P1490 - Engine cooling fan motor relay low speed circuit
P1491 - Engine cooling fan motor relay high/low circuits
P1492 - Ambient/battery temperature sensor voltage high
P1493 - Ambient/battery temperature sensor voltage low
P1494 - EVAP leak detection pump pressure switch
P1495 - EVAP leak detection pump solenoid
P1496 - ECM 5-volt output reference voltage low
P1594 - Alternator output voltage too high
P1595 - Cruise control
P1686 - Alternator output voltage too low
P1685 - Ignition key not programmed into immobilizer module
P1686 - CAN data bus, immobilizer module no signal
P1687 - CAN data bus, no instrumentation signal
P1969 - ECM EEPROM error
P1697 - ECM EEPROM error
P1698 - CAN data bus, no transmission module signal
P1899 - Park/neutral switch input circuit malfunction
