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Thread: $0312 Sub Function Not Supported or Invalid Format ($12)

  1. #1
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    Default $0312 Sub Function Not Supported or Invalid Format ($12)

    Previous tuner loaded custom tunes to truck, now I am trying to adjust tunes and i am coming up with this error

    "$0312 Sub Function Not Supported or Invalid Format ($12)"

    Is this a result of previous tuner locking the tune?


    V3
    Firmware V3.00.070
    Bootblock V3.00.005

    V8
    Version 8.38

    here is trace file 20211025_171526_CMB_R.txt
    Last edited by ccclose; October 25th, 2021 at 11:35 AM.

  2. #2
    Lifetime Member GMPX's Avatar
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    Your ECM has a CSP5 Custom OS in it, reading will be blocked unfortunately for you.
    I no longer monitor the forum, please either post your question or create a support ticket.

  3. #3
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    So answer is dealer flash?

    Or is there another way, such as someone sending me the correct file.

    ECM Shows E/C S90170.02
    Last edited by ccclose; October 25th, 2021 at 12:12 PM.

  4. #4
    Lifetime Member GMPX's Avatar
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    You should be fine to flash over the top once you get a suitable file (provided you are happy to lose the tune in there forever?)
    I no longer monitor the forum, please either post your question or create a support ticket.

  5. #5
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    I see, I’ll see if I can come up with a stock file.

    I believe I may run a single tune and adjust accordingly so I don’t run into this issue again.

    Thanks!

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