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 helps control the brakes. It might be getting too much power.
The C05BE code indicates that the voltage in the brake booster motor B position sensor supply circuit is higher than expected.
The Brake Booster Motor B Position Sensor is responsible for detecting the position of the brake booster motor. If the sensor detects a voltage that is higher than the expected range, it triggers the C05BE code. This could be due to a wiring issue, a faulty sensor, or a problem with the control module.
• Illuminated check engine light
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake booster motor position sensor
• Wiring issues such as short circuits or open circuits
• Faulty control module
Brake Booster: A device that uses vacuum or hydraulic pressure to assist in applying force to the brake pedal.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Check for any other related codes and address them first.
• Inspect the wiring and connectors for damage or corrosion.
• Test the brake booster motor position sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty brake booster motor position sensor.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure all electrical connections are secure.
• Schedule routine vehicle maintenance.
Sensor Issue
• Do not ignore the warning light; get the vehicle checked as soon as possible.
• Avoid driving in heavy traffic until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on brake system components.
This code has been associated with issues in vehicles with electronic brake systems, particularly in models with advanced driver assistance systems.
High – Brake system issues can affect vehicle safety and should be addressed immediately.
Driving with a malfunctioning brake system can be dangerous and may violate safety regulations.
• Vehicle must be stationary.
• Ignition in the 'ON' position without starting the engine.
The brake booster motor position sensor is typically located near the brake booster assembly, which is found on the driver’s side of the engine compartment.
Q: Can I drive with the C05BE code?
A: It's not recommended to drive with this code as it can affect your braking performance.
Q: How can I reset the C05BE code?
A: After fixing the issue, use an OBD-II scanner to clear the code from the vehicle's computer.
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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