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 talking to a sensor that helps the brakes work properly. It's like when your game controller isn't connected to your console, so you can't play the game right.
The vehicle's computer has detected an issue with the circuit or connection to the brake booster motor position sensor, which is essential for proper brake function.
The C058B code indicates a problem with the electrical circuit or an open circuit in the Brake Booster Motor B Position Sensor. This sensor is responsible for monitoring the position of the brake booster motor, which assists in applying the brakes. An open circuit means there is a break in the electrical path, preventing the sensor from sending signals to the vehicle's control module.
• Illuminated check engine light
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake booster motor position sensor
• Damaged wiring or connectors
• Blown fuse in the sensor circuit
Brake Booster: A device that uses vacuum or hydraulic pressure to assist in applying the brakes.
Sensor Circuit: The electrical pathway that allows sensors to communicate with the vehicle's control module.
• Inspect the brake booster motor position sensor and its wiring for damage.
• Check for blown fuses related to the sensor circuit.
• Use a multimeter to test the sensor's electrical connections.
• Replace the faulty brake booster motor position sensor.
• Repair or replace damaged wiring or connectors.
• Replace any blown fuses in the sensor circuit.
• Multimeter
• OBD-II scanner
• Basic hand tools (screwdrivers, wrenches)
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components for wear and damage.
• Ensure electrical connections are secure and free of corrosion.
• Follow the manufacturer's maintenance schedule for brake system checks.
Sensor Issue
• Do not ignore the check engine light; have it diagnosed as soon as possible.
• If you notice any changes in braking performance, get your vehicle checked immediately.
Check with your vehicle's manufacturer for specific warranty coverage related to brake system components.
This code has been reported in vehicles with electronic brake systems, particularly in models with advanced braking technology.
High – Brake system issues can affect vehicle safety and should be addressed immediately.
Driving with a malfunctioning brake system can be dangerous. Always ensure your vehicle is safe to operate.
• Vehicle stationary and in a safe location
• Ignition in the 'On' position without starting the engine
The brake booster motor position sensor is typically located near the brake booster assembly in the engine compartment.
Q: Can I drive with the C058B code?
A: It's not recommended to drive with this code active, as it can affect your vehicle's braking performance.
Q: How do I reset the C058B code?
A: After repairing the issue, you can use an OBD-II scanner to clear the code. If the issue persists, the code may return.
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.