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 saying that the sensor on the right back wheel, which helps measure how fast the wheel is turning, is not working properly because it is getting too much electricity.
The C0515 code indicates that the right rear wheel speed sensor is sending a voltage signal that is higher than expected, which could mean an electrical issue or a faulty sensor.
The wheel speed sensor measures the rotational speed of the wheel and sends this information to the vehicle's electronic control unit (ECU). A 'Circuit High' code suggests that the sensor is sending a voltage signal that is higher than the normal operating range, which could be due to a short circuit, damaged wiring, or a malfunctioning sensor.
• ABS warning light on the dashboard
• Traction control system malfunction
• Inconsistent speedometer readings
• Faulty right rear wheel speed sensor
• Damaged wiring or connectors
• Short circuit in the sensor circuit
OBD-II: On-Board Diagnostics, a standardized system in cars for self-diagnosing and reporting vehicle issues.
ABS: Anti-lock Braking System, a safety system that prevents the wheels from locking up during braking.
• Visually inspect the right rear wheel speed sensor and its wiring for damage.
• Use a multimeter to check the voltage and resistance of the sensor circuit.
• Scan the vehicle's computer for additional codes that might indicate related issues.
• Replace the faulty right rear wheel speed sensor.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $250
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect wheel speed sensors and wiring.
• Keep the vehicle's undercarriage clean to avoid debris buildup.
• Perform routine maintenance checks.
Sensor Issue
• Do not ignore the ABS warning light; it indicates a critical safety system issue.
• Have the vehicle inspected by a professional mechanic if unsure about the diagnosis.
Check with the vehicle manufacturer for warranty coverage on ABS components.
This code is commonly associated with vehicles that have experienced wiring issues due to exposure to elements or physical damage.
Moderate – While the vehicle may still be drivable, the ABS system may not function properly, which can affect braking performance.
Driving with a malfunctioning ABS system can be dangerous, especially in adverse conditions. Ensure repairs are made promptly.
• Vehicle parked on a level surface
• Ignition in the 'on' position
The right rear wheel speed sensor is located near the brake rotor on the rear passenger side wheel.
Q: Can I drive with a C0515 code?
A: While you can drive, it's not recommended as the ABS system may not function properly, affecting safety.
Q: How can I reset the ABS light?
A: After fixing the issue, you can use an OBD-II scanner to clear the code and reset 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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