• ABS warning light on
• Traction control light on
• Inconsistent speedometer readings
• Faulty wheel speed sensor
• Damaged wiring or connections
• Malfunctioning ABS module
ABS: Anti-lock Braking System
Sensor: A device that detects or measures a physical property
• C0500
• C0501
This code means there's a problem with one of the wheels on your car. It might not be spinning as it should, like when a toy car's wheel gets stuck.
The C0504 code indicates an issue with the right rear wheel speed sensor circuit.
C0504 is a chassis code related to the wheel speed sensor circuit on the right rear wheel. The sensor is not sending the correct signals to the vehicle's computer, which can affect systems like ABS.
• Check the right rear wheel speed sensor for damage.
• Inspect the wiring and connections to the sensor.
• Test the ABS module for faults.
• Replace the faulty wheel speed sensor.
• Repair or replace damaged wiring.
• Replace the ABS module if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect wheel sensors.
• Keep ABS system clean and dry.
• Check wiring for wear and tear.
Sensor Issue
• Do not ignore the ABS light.
• Get the vehicle checked by a professional.
• Avoid driving in harsh conditions until fixed.
Check with your vehicle manufacturer for specific warranty coverage on ABS components.
C0504 has been a common issue in vehicles with aging ABS systems, particularly in models over 5 years old.
Moderate – While the vehicle is still drivable, ABS and traction control may not function properly.
Driving with a malfunctioning ABS system can increase stopping distances and reduce vehicle control in emergency situations.
• Vehicle stationary
• Ignition on
The right rear wheel speed sensor is located near the brake assembly of the right rear wheel.
Q: Can I drive with the C0504 code?
A: Yes, but be cautious as your ABS and traction control systems may not work properly.
Q: How do I reset the ABS light?
A: Fix the underlying issue first, then use an OBD-II scanner to clear the code.
