YJ codes?

    My brothers boss has a YJ.. not sure of the year off hand but hes getting an engine code of 12. what does that mean? I know he has 4.0 with stick I think.



    thanks
    87_AMC_XJ

    Not sure about 12...........
    I know 11 is ignition
    and 13 is the map sensor
    so your guess is as good as mine in a yj.


    Although in a tj is means that power to the PCM was diconected


    HTH

    Alldata says 12 is <i>"Direct battery input to controller disconnected with the last 50 ignition key-on cycles. "</i>

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