Park Brake Sensor or Switch Circuit
The park brake apply switch or position sensor reports a circuit fault. The ECU loses the indication whether the parking brake is engaged - relevant for stop-start, hill-hold, and certain shift-interlock strategies.
Affected components
- Park brake switch
Common causes
- High likelihood: Open in switch or wiring
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.