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Thread: PCM Write Failed (Twice)

  1. #1
    Potential Tuner
    Join Date
    Jan 2023
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    1

    PCM Write Failed (Twice)

    My partner pulled a file and removed the VATS and when writing back it timed out and failed and wouldn't even go back to the stock file, put a new computer in it and it done the same again. Why would this be failing and wiping out the computer?

  2. #2
    Senior Tuner
    Join Date
    Mar 2011
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    Ripley, MS
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    1,865
    Quote Originally Posted by Selmore View Post
    My partner pulled a file and removed the VATS and when writing back it timed out and failed and wouldn't even go back to the stock file, put a new computer in it and it done the same again. Why would this be failing and wiping out the computer?
    The P59 ECM's can be a little finicky. I'd recommend pulling the radio fuse and disabling the Fast Write option. Also need to make sure that the vehicle battery is in good shape. That works 90% of the time on those blue/green computers.

    If that doesn't work, you can purchase one of the inexpensive benchtop programming harnesses on ebay. That'll get the job done.

    There's also a method to restore your ECM's. Check out this link. https://youtu.be/voJ2knexPrY

    Also look at this bench top tuning video.

    https://youtu.be/ZpdnOCPqJSg