x7F Negative Response Code

Modified on Mon, 04 Dec 2023 at 01:07 PM

Problem

The x7f Negative Response Code generally indicates an issue with the communications in the vehicle.

Resolution

1.If you have the ability, we would first suggest using a bench harness to read or flash the module in the vehicle.
2.If you do not have the ability to use a bench harness or the problem 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.

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