C056EBrake Pedal Position Sensor Supply Voltage Circuit High
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- C056E is stored when the 5 V feed of the brake pedal position sensor rises above its limit. In Ford's 2015–2019 hybrid logic that means more than 5.13 V for 50 ms; the ABS module records C100F and the hybrid powertrain module C056E. An elevated reference usually comes from a short between the supply and a battery-voltage wire, from a missing sensor ground that lets the line float up, or from a failing regulator. Since Bosch-type pedal sensors deliver two redundant outputs referenced to the same supply, a high supply skews both and the plausibility check can no longer help. GM uses C056E in its own way, for instance in the 2017–2019 parking brake case on Acadia, Traverse, Enclave and XT5 (PIT5662A).
- What you may notice
- Brake system warning lamp
- Regenerative braking limited
- Pedal sensor plausibility codes may follow
- Likely causes
- LikelySupply wire shorted to a battery-voltage circuit
- PossibleOpen sensor ground letting the reference float high
- RareFaulty 5 V regulator in the brake module
- Repair
- Medium · Usually a job for a workshop.Typical cost: €40 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.