Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble reading the position of the brake pedal. It's like when a video game controller button isn't working right.
The P057C code is triggered when the engine control module (ECM) detects a low voltage signal from the brake pedal position sensor circuit.
The brake pedal position sensor monitors the position of the brake pedal and sends this information to the vehicle's ECM. A 'Circuit Low' code indicates that the voltage signal from the sensor is below the expected range, suggesting a potential wiring issue, sensor fault, or ECM problem.
• Brake lights may not function properly
• Cruise control may not engage
• Warning light on the dashboard
• Faulty brake pedal position sensor
• Damaged or corroded wiring or connectors
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the brake pedal position sensor and its wiring for damage.
• Test the voltage and ground signals at the sensor.
• 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 brake system components.
• Ensure connectors are clean and secure.
• Avoid exposure to excessive moisture.
Sensor Issue
• Do not ignore the warning light; it could affect braking performance.
• Have a professional inspect the vehicle if unsure.
• Avoid using cruise control until the issue is resolved.
Check with the vehicle manufacturer for specific warranty coverage on sensors and electronic components.
The P057C code has been reported in various models, typically related to sensor or wiring issues.
Moderate – While the vehicle may still be drivable, the braking system's performance could be compromised.
Ignoring brake-related warnings can lead to reduced braking performance and increased risk of accidents.
• Vehicle ignition in the ON position
• Brake pedal pressed and released
The brake pedal position sensor is typically located near the brake pedal assembly.
Q: Can I drive with a P057C code?
A: It's possible to drive, but it's not recommended as it may affect braking performance and safety features like cruise control.
Q: How do I clear the P057C code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed to prevent it from returning.
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.
View on Amazon
Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
View on Amazon
Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.