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 is having trouble reading how fast the right back wheel is spinning. It's like when your bicycle speedometer isn't working right.
The vehicle's computer has detected a problem with the signal from the right rear wheel speed sensor. The signal is either out of range or not performing as expected.
The C0667 code is triggered when the Electronic Control Unit (ECU) detects a performance issue or an out-of-range signal from the right rear wheel speed sensor. This sensor is responsible for monitoring the speed of the wheel and sending this data to the ECU for various control systems, such as ABS and traction control.
• ABS warning light on
• Traction control warning light on
• Inconsistent speedometer readings
• Faulty right rear wheel speed sensor
• Damaged or corroded wiring or connectors
• Faulty ABS module
ECU: Electronic Control Unit, the computer that controls various systems in the vehicle.
ABS: Anti-lock Braking System, a safety system that prevents the wheels from locking up during braking.
• Inspect the right rear wheel speed sensor and its wiring for damage.
• Check for corrosion or loose connections at the sensor and ECU.
• Use a multimeter to test the sensor's resistance and 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 wheel area clean to prevent debris buildup.
• Perform routine maintenance checks on the ABS system.
Sensor Issue
• Do not ignore the ABS warning light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving in conditions where traction is critical until the issue is resolved.
Check with the vehicle manufacturer for specific warranty coverage related to the ABS system.
Wheel speed sensor issues have been common in vehicles with advanced ABS systems, often due to sensor wear or environmental factors.
Moderate – While the vehicle may still be drivable, the ABS and traction control systems may not function properly, affecting safety.
Driving with a malfunctioning ABS system can increase the risk of accidents, especially in adverse weather conditions.
• Vehicle at a standstill
• Vehicle in motion at various speeds
The right rear wheel speed sensor is located near the wheel hub assembly on the right rear wheel.
Q: Can I drive with the C0667 code?
A: It's possible to drive, but it's not recommended as the ABS and traction control systems may not work properly.
Q: How do I reset the ABS light?
A: Fix the issue causing the code, then use an OBD-II scanner to clear the fault codes.
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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