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Thread: E41 ECM Read Failed

  1. #1
    Potential Tuner
    Join Date
    Dec 2023
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    1

    E41 ECM Read Failed

    I have a 2019 L5D and the MVPI3. Everything is connected properly, and I am connected to the internet. When I try the initial read, the VCM Editor fails to retrieve flash data. I have tried different PCs and gotten the same error. Also, I attempted to read the ECM with the TDN app and i got a "Convert seed to key, failed" error. I have submitted a ticket already and am waiting for a response. Does anyone know what will cause the editor to fail to retrieve the flash data from HP tuners?

  2. #2
    Far as i know, these are write only ECU's. So based on your vin HPT generates the stock file for you to start. So its not reading out your calibration per se

    As for why it fails, that i am unsure and HPT would be best to address i'd say.
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  3. #3
    Potential Tuner
    Join Date
    Dec 2023
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    3
    GM e41 ECM upgrade kit has to be used with MPVI3 to work on cars such a

  4. #4
    Potential Tuner
    Join Date
    Jan 2023
    Location
    Texas
    Posts
    1
    I?m having the same issue on my 2020 Duramax, I have the MPVI 2+ and the GM E41 unlock kit. Did you figure out why yours was not reading ?

  5. #5
    Hey guys! I am having this same issue. Has anyone come up with the solution?

  6. #6
    Tuner in Training
    Join Date
    Apr 2021
    Posts
    36
    Resync your device and check to make sure it has not been disabled.

  7. #7
    Advanced Tuner projectlnf's Avatar
    Join Date
    Jun 2012
    Location
    warrenton va
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    474
    For everyone having issues.. i have seen multiple people NOT put the red and white wire in the correct location on the ECM fuse.. Or using the wrong fuse all together. 2017-19 are a different fuse than the 20+

    Also make sure the batteries are good and charged

    Internet needs to be GOOD
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