C05C0Brake Pedal Position Sensor A Not Learned
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- The control unit has no valid learned rest position for channel A of the brake pedal position sensor, so it cannot turn the raw signal into a reliable pedal travel. No manufacturer documents C05C0 publicly. The closest GM analogue is C0277 with failure type 4B: the body module reports that the home position of the pedal sensor was never learned and asks for a recalibration. Stellantis likewise requires a brake pedal learn in the ABS module after a PCM swap or update (C0042-54). Hitachi describes learning the stroke sensor zero only while no brake request is present. Typical triggers are a new sensor, a replaced module or an interrupted learn. C05C1 covers channel B, C0619 an offset outside the learn limit.
- What you may notice
- Brake or ABS warning lamp and message in the cluster
- Brake lights or cruise control cancel react late or not at all
- Regenerative braking or brake assist functions restricted
- Likely causes
- LikelyLearn procedure not run after sensor or module replacement
- PossibleLearn routine aborted because the pedal was touched or the vehicle moved
- PossibleSensor channel A faulty or mounted out of position
- RareLearned values lost in the control module memory
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.