P057B
Brake Pedal Position Sensor A Circuit Range/Performance
Generic OBD-II
Common symptoms
What you'll notice
- Inspect and clean the brake pedal position sensor
- Replace the brake pedal position sensor
- Check and repair any wiring or connector issues related to the brake pedal position sensor
- Verify and adjust the brake pedal position sensor alignment
- Perform a diagnostic test on the vehicle's ECU to identify any underlying issues causing the circuit range/performance problem
Common causes
Most likely first
- Faulty brake pedal position sensor
- Loose or corroded electrical connections related to the brake pedal position sensor
- Faulty brake light switch
- Malfunctioning brake control module
- Problem with the brake pedal itself, such as being stuck or not returning to its proper position.
How to diagnose & fix
Work through it in order
- Brake pedal may feel spongy or soft
- Brake lights may not illuminate or stay illuminated
- Cruise control may not function properly
- ABS (anti
- lock braking system) may not engage or may engage unexpectedly
- Engine may not start or may intermittently stall
Read & clear P057B yourself
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