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 having trouble getting a clear signal from the sensor that tells how fast the right front wheel is spinning.
The code indicates an issue with the signal from the right front wheel speed sensor, which is not consistent or clear.
The C065C code is triggered when the vehicle's control module detects an intermittent or erratic signal from the right front wheel speed sensor B. This sensor is responsible for sending data about the wheel's speed to the vehicle's computer, which is crucial for systems like ABS (Anti-lock Braking System) and traction control.
• ABS warning light on the dashboard
• Traction control system malfunction
• Inconsistent braking performance
• Faulty right front wheel speed sensor
• Damaged or corroded wiring or connectors
• Faulty ABS module
ABS: Anti-lock Braking System
OBD-II: On-Board Diagnostics II
• Inspect the right front wheel speed sensor and its wiring for damage.
• Check the sensor's electrical connections for corrosion or looseness.
• Use a multimeter to test the sensor's output signal.
• Replace the faulty wheel speed sensor.
• Repair or replace damaged wiring or connectors.
• Replace the ABS module if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect wheel speed sensors and wiring.
• Keep the vehicle's undercarriage clean to prevent corrosion.
• Perform routine maintenance checks.
Sensor Issue
• Have the vehicle inspected by a professional if the ABS light is on.
• Avoid hard braking until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on ABS components.
This code has been commonly reported in vehicles with high mileage or those frequently exposed to harsh road conditions.
Moderate – While the vehicle can still be driven, braking performance may be compromised.
Driving with a malfunctioning ABS system can increase stopping distances and the risk of skidding.
• Vehicle stationary
• Ignition on
The right front wheel speed sensor is located near the wheel hub of the right front wheel.
Q: Can I drive with a C065C code?
A: It's possible, but not recommended as your ABS system may not function properly, affecting braking safety.
Q: How do I reset the ABS light?
A: After repairs, you can use an OBD-II scanner to clear the code, which should turn off the ABS light.
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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