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Thread: C12 code

  1. #1
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    Default C12 code

    I have figured out how to clear the H45 but now I get a C12 whenever I test it and it will reset manually but it keeps coming back.

    Only problem is my FSM does not show a C12, it only shows a C13. If I remember correctly, doesn't C12 mean everything's OK?

    Thanks.

    Paul

  2. #2
    Member Dustoff529's Avatar
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    Default

    C12 Appears to be "Diagnostic Mode"... Go have a look here, this site has a link to code data bases toward teh bottom
    Charlie

    OBD Diagnostics, Inc. - GM OBD1 Cables

  3. #3
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    Default

    Thanks, I finally figured it out by doing a search. I remember now, C12 means everything is okay.

    Thanks a lot.

    Paul

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