Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the sensor that tells the car's computer where the brake booster motor is. It's like when you can't tell if a toy car's wheels are turned because the steering wheel is stuck.
The brake booster motor position sensor is not providing expected readings, indicating a possible issue with the sensor or its circuit.
The C058A code is triggered when the vehicle's control module detects that the brake booster motor position sensor is not operating within the expected range or performance parameters. This could be due to a malfunctioning sensor, wiring issues, or a problem with the brake booster motor itself.
• Illuminated check engine light
• Reduced braking performance
• Unusual noises from the brake system
• Faulty brake booster motor position sensor
• Damaged or corroded wiring/connectors
• Malfunctioning brake booster motor
Brake Booster: A device that helps increase the force applied to the brakes.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• 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 brake booster motor position sensor if faulty.
• Repair or replace damaged wiring/connectors.
• Replace the brake booster motor if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure connectors and wiring are free from corrosion.
• Perform routine maintenance checks.
Sensor Issue
• Do not ignore the check engine light.
• Have the braking system inspected by a professional.
• Avoid driving aggressively until the issue is resolved.
Check if the vehicle is still under warranty for brake system components.
This code has been reported in vehicles with electronic brake systems, particularly in models with advanced driver assistance systems.
High – Brake system issues can affect vehicle safety.
Driving with a malfunctioning brake system can be dangerous and may not comply with road safety regulations.
• Vehicle at operating temperature
• Vehicle stationary with engine running
The brake booster motor position sensor is typically located near the brake booster assembly in the engine compartment.
Q: Can I drive with a C058A code?
A: It's not recommended to drive with this code as it can affect braking performance.
Q: How do I clear the C058A code?
A: Fix the underlying issue and use an OBD-II scanner to clear the code.
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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