Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is getting too much power for the brakes, which can be bad.
This code indicates that the Anti-lock Braking System (ABS) control module is receiving a higher voltage than expected.
The ABS control module monitors the voltage it receives from the vehicle's electrical system. If the voltage is higher than the specified range, it triggers the C0565 code. This can affect the ABS functionality and overall vehicle safety.
• ABS warning light on
• Unusual braking behavior
• Intermittent ABS operation
• Faulty alternator
• Poor voltage regulator
• Wiring issues causing high voltage
ABS: Anti-lock Braking System
Voltage Regulator: A device that maintains a constant voltage level in the electrical system.
• Check the battery and charging system for overcharging.
• Inspect wiring and connections to the ABS module.
• Test the alternator and voltage regulator.
• Replace or repair the alternator if faulty.
• Fix or replace the voltage regulator.
• Repair any damaged wiring or connections.
• Multimeter
• OBD-II scanner
• Wrench set
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly check the battery and charging system.
• Ensure all electrical connections are secure.
• Service the vehicle regularly to catch issues early.
Electrical Issue
• Do not ignore the ABS warning light.
• Have the vehicle inspected by a professional if the light comes on.
• Avoid driving in conditions where ABS is critical until repaired.
Check with your vehicle manufacturer for warranty coverage on the ABS system.
This code has been more common in vehicles with aging electrical systems or aftermarket alternators.
Moderate – While the vehicle can still be driven, the ABS system may not function properly, affecting safety.
Driving with a malfunctioning ABS system can increase stopping distances and the risk of accidents.
• Vehicle ignition on
• Engine running
The ABS control module is typically located near the engine or under the dashboard, depending on the vehicle model.
Q: Can I drive with the C0565 code?
A: It's possible, but not recommended as the ABS may not function properly, affecting your safety.
Q: How can I prevent this code from appearing?
A: Regularly check your vehicle's electrical system and ensure all components are functioning correctly.
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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