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  1. #1
    Junior Member
    Join Date
    May 2012

    Need help with YJ fault codes and also have a front end vibration

    Hello Everyone, I'm an owner of 1993 YJ 4L 5 speed.
    I'm getting an error codes: 12, 75, 73, 35, 55.
    Does anyone know what codes 75 and 73 mean?
    Why do I get code 35 - "Radiator Fun Relay" if this car does not equip with an electric fan?

  2. #2
    Junior Member
    Join Date
    May 2012
    Is there a code 75 or 73 ?

  3. #3
    Junior Member
    Join Date
    Jun 2012
    Don't worry about code 35, it won't affect anything.

    Not sure on 73 or 75.

  4. #4
    Junior Member
    Join Date
    Jun 2012
    there is no code for 75 or 73 are you sure your reading it correctly
    Hope this helps

    11 No ignition reference signal detected during cranking (bad hall effect) OR timing belt skipped one or more teeth; or intermittent loss of either camshaft or crankshaft position sensor
    12 Memory Standby power lost (Batt or computer recently disconnected)
    13 No change in MAP from start to run
    14 MAP sensor circuit open or shorted; voltage too low
    15 No speed/distance sensor signal
    16 Loss of battery voltage detected with engine running
    17 Engine stays cold too long (bad thermostat)
    21 Oxygen sensor signal out of range, possibly shorted
    22 Coolant sensor signal out of range (or disconnected to set timing)
    23 Intake air temperature signal out of range
    24 Throttle position circuit out of range
    25 Automatic Idle Speed (AIS) motor driver circuit shorted or target idle not reached, vacuum leak found
    26 Peak injector circuit voltage has not been reached
    27 Logic module fuel circuit internal problem or TBI injector does not respond properly to control signal
    31 Evaporator Purge solenoid circuit open or shorted or Evaporator solenoid circuit
    32 EGR system failure or Power loss lamp open or shorted
    33 Air conditioning clutch relay circuit open or shorted ( Also will show up for rigs without AC)
    34 Speed control vacuum or vent solenoid circuits open or shorted
    35 Cooling fan relay circuit open or shorted
    36 Wastegate control circuit open or shorted
    37 Shift indicator light failure, 5-speed (blown bulb) OR Park/neutral switch failure OR Torque converter unlock circuit open or shorted, A-413 4-speed auto
    41 Alternator field control circuit open or shorted
    42 Automatic shutdown relay circuit open or shorted
    42 Fuel pump relay control circuit
    42 Fuel level unit - no change over miles OR Z1 voltage missing when auto shut-down circuit energized
    43 Peak primary coil current not achieved with max dwell time OR Cylinder misfire
    43 Problem in power module to logic module interface
    44 No FJ2 voltage present at logic board OR Logic module self-diagnostics indicate problem OR Battery temperature out of range
    45 Turbo boost limit exceeded (engine was shut down by logic module)
    46 Battery voltage too high during charging or charging system voltage too low
    47 Battery voltage too low and alternator output too low
    51 Oxygen sensor stuck at lean position OR Internal logic module fault ('84 turbo only)
    52 Oxygen sensor stuck at rich position OR Internal logic module fault ('84 turbo only)
    53 Logic module internal problem
    54 No sync pickup signal during engine rotation (turbo only) OR Internal logic module fault ('84 turbo only)
    55 55 End of codes
    61 "Baro" sensor open or shorted
    62 EMR mileage cannot be stored in EEPROM
    62 PCM failure SRI mile not stored
    63 Controller cannot write to EEPROM
    64 Catalytic converter efficiency failure
    65 Power steering switch failure


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