Brake Pedal Position Sensor A Circuit Open
The brake pedal position sensor A has an open control circuit. The ECU loses analogue feedback about pedal travel - used by stop-start, regenerative braking and adaptive cruise to coordinate engine, motor and friction brakes.
Affected components
- Brake pedal position sensor a
Common causes
- High likelihood: Open in sensor or wiring
- Low likelihood: Pin pushed back out of connector body
- Low likelihood: Cracked solder joint inside the module or sensor
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
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.