OBD-II code · Chassis
C0291 Brake Pedal Apply Sensor Circuit Malfunction
Electrical fault in the brake pedal apply sensor circuit. The module cannot reliably detect whether the brake pedal is pressed, which affects ABS, ESP and brake assist functions.
Is it safe to drive with C0291?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPedal apply sensor failed
- PossibleWiring or connector fault
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Brake Apply Sensor, Brake Control Module, Sensor Wiring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.