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Thread: Unable to read PCM

  1. #1
    Tuner in Training
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    Dec 2018
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    Unable to read PCM

    New laptop running Windows 10
    VCM editor version 4.8.7
    have done a resync on interface

    Begins reads, reaches 6% then halts and times out ...read failed.

    Problem with interface???

  2. #2
    HP Tuners Support
    (foff667)
    Bill@HPTuners's Avatar
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    Jun 2004
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    try reading the ecm via bench harness to rule out wiring/battery issue.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  3. #3
    Tuner
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    gippsland
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    what vehicle/operating system?

  4. #4
    Tuner in Training
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    I don't have a bench harness.
    After a number of attempts, I was able to do a low speed read.
    Have no problem with doing a scan/datalog

    2005 GM 5.3L P59 ecm

    What puzzles me is things worked fine the first few months I had it together.

  5. #5
    Potential Tuner
    Join Date
    Nov 2017
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    Make sure you you download the latest Netframework 4.8 most current as of nowhttps://dotnet.microsoft.com/downloa...ramework/net48 This cleared up my sync issues with the new 4.8.7 update. Hope this helps

  6. #6
    Tuner in Training
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    I checked the Netframework, my system already had the newest version.