C0680Electric Park Brake Module Internal Fault
- Generic OBD-II code · Chassis
- How the car detects it
- Public evidence for C0680 is lacking: it is in none of the public J2012 tables, bulletins or maker indexes. The title describes a park brake controller that fails its own checks. How GM handles that is documented for the 2011 Saab 9-5, just under other numbers: C056E flags software that is missing, an absent calibration or implausible software, and C0558 a calibration or mechanical fault; depending on the case the brake is disabled outright or allowed one more release. In many current cars the park brake logic lives inside the ABS/ESC module, which drives both motors directly. After pad or caliper work the system must be put into maintenance mode and calibrated again, so a skipped calibration or interrupted programming is a likely trigger alongside a genuinely failed board.
- What you may notice
- Park brake warning, function disabled or degraded
- Brake cannot be applied, or only one more release is allowed
- Likely causes
- LikelyCalibration after brake service skipped or programming interrupted
- PossibleElectronics inside the park brake or ABS/ESC module failed
- RareLow battery voltage during self-test or programming
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.