C0202Brake Pedal Position Sensor
- Generic OBD-II code · Chassis
- How the car detects it
- No accessible J2012 list, NHTSA bulletin or maker index mentions C0202; the code is publicly unverifiable, and C0230 carries an almost identical title. A brake pedal position sensor reports how far the pedal moves instead of a mere on/off state. GM patented a resistive design with two outputs: one goes to the engine module for diagnosis, the other to the brake module, which uses it to release the shift interlock. Besides out-of-range checks, GM looks for faults inside the valid range by weighting how much the reading changes while the interlock is released. Bosch's PWG travel sensor works without contact through a Hall element and sends two PWM signals so the control unit can compare them. Such sensors are needed above all where braking is blended with energy recovery.
- What you may notice
- Brake or stability warning lamp on
- Shift lever cannot be moved out of park, cruise control inactive
- Likely causes
- LikelyWorn, misadjusted or not relearned pedal position sensor
- PossibleLoose or corroded connector at the pedal
- RarePedal bracket or return spring binding
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.