What does code C0660 mean?

Q: What does code C0660 mean?

Park Brake Switch Circuit. The C0660 code indicates that the electronic brake control module (EBCM) has detected a fault in the park brake switch circuit, which is the electrical path that tells the module whether the parking brake is engaged or released. The module monitors voltage or continuity on this circuit and sets the code when the signal falls outside the expected range for the current ignition state and vehicle speed.

DTC codes / C06xx · Brakes, steering and suspension / C0660

C0660Park Brake Switch Circuit

The C0660 code indicates that the electronic brake control module (EBCM) has detected a fault in the park brake switch circuit, which is the electrical path that tells the module whether the parking brake is engaged or released. The module monitors voltage or continuity on this circuit and sets the code when the signal falls outside the expected range for the current ignition state and vehicle speed.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.