Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer thinks there's something wrong with the sensor that tells it where the brake pedal is. It's like if your game controller's button wasn't working right.
This code is triggered when the Engine Control Module (ECM) detects a problem with the range or performance of the brake pedal position sensor.
The brake pedal position sensor is responsible for sending a signal to the ECM indicating the position of the brake pedal. If the signal is outside the expected range or inconsistent, the ECM will set the P057B code.
• Brake lights may not work properly
• Cruise control may not engage
• Warning lights on the dashboard
• Faulty brake pedal position sensor
• Wiring issues or poor connections in the sensor circuit
• Faulty ECM
ECM: Engine Control Module, the computer that controls engine functions.
OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics.
• Check for any other related codes and address those first.
• Inspect the brake pedal position sensor and its wiring for damage.
• Test the sensor with a multimeter to ensure it's functioning correctly.
• Replace the brake pedal position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect sensor wiring for damage.
• Ensure connectors are clean and secure.
• Perform routine maintenance checks.
Sensor Issue
• Avoid using cruise control until the issue is fixed.
• Get the vehicle checked by a professional mechanic.
Check if your vehicle's warranty covers sensor issues.
This code has been more common in vehicles with high mileage or those frequently used in stop-and-go traffic.
Moderate – It may affect vehicle safety systems like brake lights and cruise control.
Driving with this issue may be unsafe due to potential brake light failure.
• Vehicle must be on and running.
• Brake pedal must be pressed to test the sensor.
The brake pedal position sensor is typically located near the brake pedal assembly.
Q: Can I drive with a P057B code?
A: It's not recommended as it may affect brake light functionality, which is a safety concern.
Q: How do I reset the P057B code?
A: Fix the underlying issue first, then use an OBD-II scanner to clear the code.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
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Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
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