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 has detected that the electric motor helping the brakes is using too much power. It's like when you plug in a device and it uses more electricity than it should.
The code indicates that there is an unusually high current in the brake booster motor's B phase, which could be due to a malfunction or overload.
The C0592 code is triggered when the vehicle's control module detects that the current in the brake booster motor's B phase exceeds a predefined threshold. This could be due to a short circuit, an overworked motor, or a failure in the control circuit.
• Increased brake pedal effort
• Brake warning light on the dashboard
• Reduced braking performance
• Short circuit in the brake booster motor
• Faulty brake booster motor
• Issues with the control module
Brake Booster: A device that uses vacuum or hydraulic pressure to assist the driver in applying the brakes.
Current: The flow of electric charge, measured in amperes.
• Check for any blown fuses related to the brake system.
• Inspect the brake booster motor and its wiring for signs of damage or wear.
• Use a multimeter to measure the current draw of the brake booster motor.
• Replace the brake booster motor if faulty.
• Repair or replace damaged wiring or connectors.
• Reset the vehicle's control module to clear the code.
• Multimeter
• OBD-II scanner
• Basic hand tools
$200 - $600
Moderate
• Chevrolet Tahoe
• GMC Yukon
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure proper maintenance of electrical systems.
• Avoid overloading the vehicle.
Brake System Issue
• Do not ignore the brake warning light.
• Have the braking system inspected by a professional.
• Avoid driving the vehicle until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on brake system components.
This code has been reported in vehicles with electric brake booster systems, particularly in models with high mileage.
High – This issue affects the braking system and should be addressed immediately to ensure safe vehicle operation.
Driving with a malfunctioning brake system can be dangerous and may violate vehicle safety regulations.
• Vehicle stationary with ignition on.
• Brake pedal applied.
The brake booster motor is typically located near the firewall in the engine compartment, connected to the brake master cylinder.
Q: Can I drive with a C0592 code?
A: It's not recommended to drive with this code as it affects the braking system, which is crucial for safety.
Q: How can I reset the C0592 code?
A: After repairs, use an OBD-II scanner to clear the code from the vehicle's control module.
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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Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
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Helpful for safer access during underbody inspection work.
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