C0202
Brake Pedal Position Sensor
The chassis or brake control module has detected an implausible signal from the brake pedal position sensor. Modern brake systems use this sensor for brake assist, regenerative braking and adaptive cruise control functions.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
Ordered by how often each turns out to be the cause.
- Pedal position sensor failedCommon
- Sensor not calibrated after replacementPossible
- Wiring or connector faultLess likely
Parts involved
- Brake Pedal Position Sensor
- Brake Control Module
- Brake Pedal Assembly
C0202 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.