Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer doesn't know where the brake pedal is supposed to be when you're not pressing it.
The vehicle's control module has not successfully learned the position of the brake pedal when it is not being pressed, which is necessary for proper brake system operation.
The Brake Pedal Position Sensor B is responsible for providing the control module with the position of the brake pedal. If the sensor's position is not learned or calibrated, the system might not function correctly, potentially affecting braking performance.
• Brake warning light on the dashboard
• Unresponsive brake pedal
• Inconsistent braking performance
• Faulty brake pedal position sensor
• Poor electrical connection to the sensor
• Control module software issue
Brake Pedal Position Sensor: A sensor that detects the position of the brake pedal.
Calibration: The process of setting or correcting a measuring device or base level.
• Check for any other related trouble codes.
• Inspect the brake pedal position sensor and its wiring.
• Perform a brake pedal position sensor calibration procedure.
• Replace the brake pedal position sensor if faulty.
• Repair or replace any damaged wiring or connectors.
• Reprogram or update the control module software if needed.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Chevrolet Malibu
• GMC Sierra
• Cadillac Escalade
• Regularly check and maintain brake system components.
• Ensure all software updates are applied to the vehicle.
• Inspect electrical connections for corrosion or damage.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved.
• Consult with a professional mechanic for accurate diagnosis.
• Regularly maintain the vehicle to prevent similar issues.
Check if the brake system is covered under the vehicle's warranty for potential free repairs.
This code has been associated with vehicles that have electronic brake systems and requires proper calibration for optimal performance.
High – Immediate attention is needed to ensure safe braking performance.
Driving with a malfunctioning brake system can lead to accidents. Address this issue promptly to ensure safety.
• Vehicle stationary with ignition on.
• Brake pedal not pressed.
The brake pedal position sensor is located near the brake pedal assembly inside the vehicle cabin.
Q: Can I drive with a C05C1 code?
A: It's not recommended as it may affect braking performance and safety.
Q: How do I reset the brake pedal position sensor?
A: A professional mechanic can perform a calibration procedure using specialized tools.
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.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
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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.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.