Error Message: Detect Protocol Failed

Modified on Mon, 04 Dec 2023 at 12:44 PM


The Detect Protocol Failed error is caused by noise in the vehicle's communications or because an MPVI2 needs to be resynced.


1.If you have an MPVI2,
 a.Make sure your computer is connected to the Internet.
 b.Open VCM Editor.
 c.In the Help menu, select Resync Interface.

2.If the issue persists after a successful resync (or you have a first-generation MPVI), we suggest using a bench harness to read and flash the vehicle.
3.If the problem still persists, start a support ticket and send us the following:
 A debug.dat file from your PC.
 A VCM Suite Infolog while connected to the vehicle.


Was this article helpful?

That’s Great!

Thank you for your feedback

Sorry! We couldn't be helpful

Thank you for your feedback

Let us know how can we improve this article!

Select atleast one of the reasons
CAPTCHA verification is required.

Feedback sent

We appreciate your effort and will try to fix the article