How to Get Chrysler Codes OBD1

Learn How To Get Codes From Your Older Chrysler, Dodge and Plymouth.

This guide will show you how to gather trouble code for Chrysler, Dodge and Plymouth automobiles built before 1996. This computer system is call OBD1.

Retrieval Method


To start gathering trouble codes turn the ignition key on off in rapid succession five times ending the cycle with the key in the on position.


Once this activation has started the check engine light will start to flash. The first set of check engine light flashes will be the first digit of the two digit code. After the check engine light pauses for a short time it will start to blink again starting the second digit identification and completing the code's second number. If additional trouble codes are stored in the computer the first digit will begin to flash and then the second digit. For example: check engine light flashes four times pauses and then flashes three more times the code is 43.


The check engine light will flash five and then five (55) meaning the code gathering is over. The system will flash 12 if there are no codes stored in the computer's memory. To clear codes disconnect the negative battery terminal for 30 seconds and reconnect.

ODB1 Code Definitions

11 - Camshaft signal or ignition signal, no reference signal during cranking.

12 - Memory to controller has been cleared within 50-100 engine starts.

13 - Map sensor not detecting any change during test.

14 - Map voltage too high or too low.

15 - Vehicle speed sensor, no signal detected.

16 - Knock sensor circuit. Open or short detected.

17 - Low engine temperature, possible thermostat fault.

21 - Oxygen sensor signal, neither rich or lean detected.

22 - Coolant sensor voltage low.

23 - Air charge voltage high/low detected.

24 - Throttle position sensor voltage high/low.

25 - Automatic idle speed motor driver circuit, short or open detected.

26 - Injectors 1 2 and 3 peak current not reached.

27 - Injector control circuit does not respond to control signal.

31 - Purge solenoid circuit, open or short detected.

32 - EGR solenoid circuit, open or short detected.

33 - A/C clutch relay circuit, open or short detected.

34 - Speed control servo solenoid, open or short detected.

35 - Radiator fan control relay circuit, open or short detected.

36 - Waste-gate solenoid, open or short detected.

37 - Part throttle unlock (PTU) circuit, open or short detected.

41 - Charging system circuit not responding to control signal.

42 - Fuel pump or auto shutdown (ASD) relay voltage sensed at controller.

43 - Ignition control circuit not responding.

44 - Battery temperature voltage circuit problem.

45 - Turbo boost limit exceeded-map sensor detects over-boost.

46 - Battery voltage too high.

47 - Battery voltage too low.

51 - Air/fuel at limit.

52 - Logic module fault.

53 - Internal controller failure.

54 - Camshaft reference circuit not detected.

55 - End of message.

61 - BARO read solenoid, open or short detected.

62 - EMR mileage not stored.

63 - Eprom write denied.

64 - Flex fuel sensor signal out of range.

65 - Manifold tuning valve, open or short detected.

66 - No CCD messages.

76 - Ballast bypass relay, open or short detected.

77 - Speed control relay, open or short detected.

Import Code Definition

1 - Oxygen sensor.

2 - Crank engine sensor.

3 - Air flow sensor.

4 - Barometric pressure sensor.

5 - Throttle position sensor.

6 - Motor position sensor.

7 - Engine coolant temperature sensor.

8 - No.1 cylinder TDC sensor.

12 - Air flow sensor.

13 - Air temperature sensor.

15 - SC motor position sensor.

21 - Engine coolant temperature sensor.

22 - Crank angle sensor.

24 - Vehicle speed sensor.

25 - Barometric pressure sensor.

31 - Knock sensor.

32 - Manifold pressure sensor.

36 - Ignition timing adjustment signal.

39 - Oxygen sensor.

41 - Injector circuit

42 - Fuel pump.

43 - EGR failure.

44 - Ignition coil circuit failure.

52 - Ignition coil circuit failure.

53 - Ignition coil circuit failure.

55 - IAC valve position sensor.

59 - Heated oxygen sensor.

61 - Transaxle control unit cable.

62 - Warm up control valve position sensor

Got Any Questions?

If you have any questions about a OBD1 trouble code, please visit our forum. If you need car repair advice, please ask our community of mechanics who are happy to help. Our service is always 100% free.

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