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 is a problem with the sensor that tells the car's computer the position of the brake booster motor. It's like when your game controller doesn't tell the game what you're doing because the wire is broken.
The C0587 code is triggered when the vehicle's control module detects an open or malfunction in the circuit of the brake booster motor position sensor.
The brake booster motor position sensor monitors the position of the brake booster motor. An open circuit or malfunction in this sensor's circuit will trigger the C0587 code. This can affect the vehicle's braking system, as the control module relies on this information to manage brake pressure and assist.
• Increased braking effort
• Brake warning light on
• ABS warning light on
• Faulty brake booster motor position sensor
• Damaged wiring or connectors
• Faulty control module
Brake Booster: A component that helps reduce the effort needed to apply the brakes.
Sensor: A device that detects and responds to some type of input from the physical environment.
• Use a scan tool to verify the C0587 code.
• Inspect the brake booster motor position sensor and its wiring for damage.
• Test the sensor for proper operation using a multimeter.
• Replace the brake booster motor position sensor.
• Repair or replace damaged wiring or connectors.
• Replace the control module if necessary.
• OBD-II scan tool
• Multimeter
• Wrench set
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure proper maintenance of vehicle electronics.
• Avoid harsh driving conditions that may damage sensors.
Sensor Issue
• Do not ignore the brake warning light.
• Have the vehicle inspected by a professional if braking feels different.
Check with the vehicle manufacturer for any applicable warranties on brake system components.
The C0587 code has been associated with electronic brake systems in modern vehicles, particularly in models with advanced braking technology.
High – Braking performance may be compromised, affecting vehicle safety.
Driving with a compromised braking system can be dangerous and may violate road safety regulations.
• Vehicle ignition on
• Brakes applied
The brake booster motor position sensor is typically located near the brake booster assembly in the engine compartment.
Q: Can I drive with a C0587 code?
A: It's not recommended to drive with this code active, as it may affect your braking performance.
Q: How do I clear the C0587 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the code should not 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.