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 thinks the sensor that tells it where the brake booster motor is might be broken or sending signals that are too high.
The brake booster motor position sensor is sending a signal voltage that is higher than expected, indicating a potential issue in the circuit.
The C0589 code is set when the Brake Booster Motor A Position Sensor circuit sends a voltage signal to the Engine Control Module (ECM) that is higher than the specified range. This could be due to an electrical fault, such as a short to voltage or an open circuit.
• Brake warning light on
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake booster motor position sensor
• Wiring issues such as shorts or open circuits
• Faulty ECM or control module
Brake Booster: A component that helps reduce the effort needed to apply the brakes.
ECM: Engine Control Module, the computer that controls the engine and other systems.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the brake booster motor position sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the brake booster motor position sensor if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure proper electrical connections.
• Perform routine vehicle diagnostics.
Sensor Issue
• Do not ignore the brake warning light.
• Seek professional repair if unsure.
• Regular maintenance can prevent such issues.
Check with the vehicle manufacturer for warranty coverage on brake system components.
This code has been associated with vehicles using electronic brake systems, particularly in models with advanced braking technologies.
High – Brake system issues can affect vehicle safety and should be addressed immediately.
Driving with a faulty brake system can be dangerous and is not recommended. Ensure repairs are performed by a qualified technician.
• Vehicle at operating temperature
• Stable electrical system voltage
The brake booster motor and its position sensor are typically located near the firewall in the engine compartment.
Q: Can I drive with a C0589 code?
A: It's not recommended to drive with this code, as it may affect the braking performance and safety of the vehicle.
Q: How can I reset the C0589 code?
A: Fix the underlying issue first, then 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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