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Thread: failed to write data to interface

  1. #1
    Potential Tuner
    Join Date
    Mar 2020
    Posts
    2

    failed to write data to interface

    I am having an issue with my scanner not wanting to resync. I was getting the error message yesterday saying "failed to determine the engine diagnostics protocol" when trying to connect to a vehicle so I unistalled the VCM Suite and reinstalled the newer version. Now I am getting the "failed to write data to interface" and my host light is red. Any ideas?

  2. #2
    Potential Tuner
    Join Date
    Jul 2019
    Location
    Ft Pierce Florida
    Posts
    6
    I have that issue if i dont close out the scanner VCM. Have to hit the disconnect tab.

  3. #3
    Potential Tuner
    Join Date
    Mar 2020
    Posts
    2
    Sounds right. The vehicle battery died while I was distracted hence the problem. Now I don't have the disconnect option....

  4. #4
    Potential Tuner
    Join Date
    Dec 2019
    Location
    la porte
    Posts
    2
    so how do we get it to act right now?

  5. #5
    Advanced Tuner mbray01's Avatar
    Join Date
    Dec 2013
    Location
    Slidell, La.
    Posts
    870
    The issue they are describing, its remedied by turning the scanner off completely and restarting it. If that doesnt fix it, contact support, they can help with more pressing issues
    Michael Bray
    Rusty Knuckle Garage
    Slidell, Louisiana
    20yr Master Tech.
    Advanced Level Specialist
    Custom Car Fabrication, Customization, High Performance.
    GM World Class Technician
    Shop Owner