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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