C0290Brake Pedal Stroke Sensor Circuit Malfunction
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- C0290 does not show up in the publicly available J2012 lists, and no maker ties it to a pedal stroke sensor. GM lists the number in PIP5094; AA1Car's GM brake table translates it as Lost Communications With PCM, a data bus fault between brake and engine module. A pedal stroke sensor measures how far the driver pushes the pedal or brake rod. Bosch builds such sensors on the Hall principle for up to 45 mm of travel or 55 degrees of rotation, and its iBooster reads the pedal through a differential travel sensor before its motor adds force. Electric boosters and blended regenerative brakes depend on this signal; when its circuit fails, the system falls back to an unassisted or less refined mode and the brake warning appears.
- What you may notice
- Brake warning lamp on
- Higher pedal effort or changed pedal feel
- Regenerative braking reduced on hybrid or electric cars
- Likely causes
- PossibleDamaged wiring or connector at the pedal travel sensor
- PossiblePedal travel sensor failed or its magnet displaced
- RareData bus fault between brake and engine module (GM meaning of the number)
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.