Easy step by step guide on how to gather and define Chrysler OBD1 trouble codes,
this information is for vehicles made before 1996.
Difficulty Level - 2
- To start gathering trouble codes turn the ignition key on off
in rapid succession five times with the cycle ending in the "ON" position.
Step 2 -
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.
Step 3 -
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
Step 4 -
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.
Step 5 -
To clear codes disconnect the negative battery terminal for 30
seconds and reconnect.
Domestic 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 1,2,3 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
Chrysler, Dodge and Plymouth automobiles have a diagnostic trouble code retrieval
method, unlike Gm and Ford which have a data port connector to gather codes.
Article first published 2016-02-03