Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means that the car's computer is getting a weak signal from the sensor that helps control the brakes. It's like when your TV remote has a weak battery and doesn't work well.
The code indicates a low voltage signal from the brake booster motor position sensor, which helps the car's computer know the position of the brake booster motor.
The C058C code is triggered when the brake booster motor B position sensor circuit sends a voltage signal that is lower than the expected range. This sensor is crucial for monitoring the position of the brake booster motor, which assists in applying the brakes with less effort.
• Illuminated check engine light
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake booster motor position sensor
• Wiring issues such as a short or open circuit
• Poor electrical connections in the sensor circuit
Brake Booster: A device that uses vacuum to help apply the brakes with less effort.
Sensor Circuit: The electrical path that transmits data from a sensor to the vehicle's computer.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the brake booster motor position sensor for proper operation.
• Replace the faulty brake booster motor position sensor.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure electrical connections are clean and secure.
• Follow scheduled maintenance for brake systems.
Sensor Issue
• Have the brakes inspected by a professional.
• Avoid driving with a known brake issue.
• Regularly check for warning lights and address them promptly.
Check with the vehicle manufacturer for potential coverage under the powertrain or emissions warranty.
This code has been reported in vehicles with electronic brake control systems, particularly in models with advanced braking technology.
High – Brake system issues can affect vehicle safety and should be addressed immediately.
Driving with a compromised brake system can lead to accidents. Ensure repairs are completed by a qualified technician.
• Vehicle ignition in the ON position
• Brake pedal depressed
The brake booster motor position sensor is typically located near the brake booster assembly, under the hood.
Q: Can I drive with a C058C code?
A: It's not recommended to drive with this code as it can affect braking performance and safety.
Q: How do I reset the C058C code?
A: After repairs, use an OBD-II scanner to clear the code. Ensure the issue is fixed to prevent the code 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.
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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.
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