Driver Comport - Diag Mode

How did they know? They didn’t use magic. They used —and at the heart of that conversation is something called Driver Comport Diag Mode .

And the next time your mechanic says, “I’ll run a full diag,” smile knowingly. You now understand the invisible conversation about to happen. Driver Comport Diag Mode

You send the command: 22 01 02 (read diagnostic readiness). The module replies with a hex string. You decode it: “Left sensor blocked.” A piece of road salt was hiding behind the rear bumper. Clean it, clear the code. Fixed. How did they know