What are the common causes of P057B?

A BPP sensor A that drifted out of calibration. Corrosion in the BPP sensor connector. A worn brake pedal pivot affecting the sensor. Incorrect pedal adjustment. A control module or programming fault.

Inspect the BPP sensor A connector for corrosion. Monitor the BPP A signal through the full pedal travel. Check the brake pedal assembly and mounting. Verify pedal adjustment. Replace the BPP sensor A if the reading drifts. Clear the code and retest.

P057B

Brake Pedal Position Sensor A Circuit Range/Performance

System: Speed and idle control (P code)
Lamp: Check Engine Light
Category: Powertrain - Computer and Auxiliary Controls

What it means

P057B means Brake Pedal Position Sensor A Circuit Range/Performance.

Where it lives

For P057B, start at the sensor the description names.

Check these first

A BPP sensor A that drifted out of calibration
Corrosion in the BPP sensor connector
A worn brake pedal pivot affecting the sensor
Incorrect pedal adjustment
A control module or programming fault

What to do next

Inspect the BPP sensor A connector for corrosion
Monitor the BPP A signal through the full pedal travel
Check the brake pedal assembly and mounting
Verify pedal adjustment
Replace the BPP sensor A if the reading drifts
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.