OBD-II code · Powertrain (generic)
P057A Brake Pedal Position Sensor A Circuit Open
The brake pedal position sensor A has an open control circuit. The ECU loses analogue feedback about pedal travel - used by stop-start, regenerative braking and adaptive cruise to coordinate engine, motor and friction brakes.
Is it safe to drive with P057A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in sensor or wiring
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.4 h
- Emissions test
- Usually unaffected
- Parts involved
- Brake Pedal Position Sensor A
Related codes
- P05DBBrake Pedal Position Sensor B Circuit Open
- P0577Cruise Control Input Circuit High
- P0578Cruise Control Multi-Function Input A Circuit Stuck
- P0579Cruise Control Multi-Function Input A Circuit Range or Performance
- P057BBrake Pedal Position Sensor A Circuit Range or Performance
- P057CBrake Pedal Position Sensor A Circuit Low
- P057DBrake Pedal Position Sensor A Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.