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 has detected a problem with the electrical power going to a sensor that tells it where the brake pedal is. It's like when a toy doesn't work because the batteries are too strong.
The brake pedal position sensor 'B' is responsible for providing the vehicle's computer with information about the position of the brake pedal. This code indicates that the voltage in the circuit supplying this sensor is higher than expected.
The Brake Pedal Position Sensor 'B' Supply Voltage Circuit High code is triggered when the vehicle's control module detects a voltage level in the brake pedal position sensor 'B' circuit that is above the specified range. This could be due to a short circuit, a faulty sensor, or an issue with the vehicle's wiring or connectors.
• Brake lights may not function correctly
• ABS warning light on the dashboard
• Unusual brake pedal behavior
• Faulty brake pedal position sensor
• Short circuit in the wiring
• Faulty connector or poor connection
Brake Pedal Position Sensor: A sensor that detects the position of the brake pedal.
Voltage Circuit: The electrical pathway that carries voltage to a component.
• Check the brake pedal position sensor for damage.
• Inspect the wiring and connectors for shorts or corrosion.
• Measure the voltage at the sensor to ensure it is within specifications.
• Replace the faulty brake pedal position sensor.
• Repair or replace damaged wiring.
• Clean or replace corroded connectors.
• Multimeter
• OBD-II scanner
• Screwdriver set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect electrical connections.
• Ensure proper maintenance of the brake system.
• Avoid exposure of electrical components to moisture.
Sensor Issue
• Do not ignore the warning light; have the vehicle checked promptly.
• Avoid driving aggressively until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on brake system components.
This code is relatively common in vehicles with electronic brake systems and can be caused by wear and tear over time.
Moderate – While the vehicle may still be drivable, the braking system may not function optimally, which could be a safety hazard.
Driving with a malfunctioning brake system can be dangerous. Always ensure your vehicle is safe to operate.
• Vehicle parked on a level surface
• Engine turned off
The brake pedal position sensor is typically located near the brake pedal assembly inside the vehicle cabin.
Q: Can I drive with a C10A4 code?
A: It's not recommended to drive with this code as it may affect the braking system's performance.
Q: How do I reset the C10A4 code?
A: After fixing the issue, use an OBD-II scanner to clear the code from the vehicle's computer.
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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Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
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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.
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