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 thinks one of the wheels is spinning too fast compared to the others, maybe because of a bumpy road.
This code is triggered when the vehicle's control module detects a wheel speed that is too high, which might happen on rough roads.
The P1518 code indicates that the vehicle's rough road detection system has identified a discrepancy in wheel speed that exceeds the expected range. This could be due to a malfunction in the wheel speed sensors or an issue with the vehicle's ABS system.
• ABS warning light on
• Traction control warning light on
• Unusual braking behavior
• Faulty wheel speed sensor
• Damaged or misaligned sensor wiring
• Malfunctioning ABS module
ABS: Anti-lock Braking System
OBD-II: On-Board Diagnostics, Second Generation
• Inspect wheel speed sensors for damage or debris.
• Check sensor wiring for any signs of wear or disconnection.
• Use a diagnostic tool to read ABS module data.
• Replace faulty wheel speed sensor.
• Repair or replace damaged wiring.
• Reprogram or replace the ABS module if necessary.
• OBD-II scanner
• Multimeter
• Wheel speed sensor removal tool
$150 - $500
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly inspect wheel speed sensors.
• Keep sensor areas clean from debris.
• Perform routine ABS system checks.
Sensor Issue
• Drive cautiously if the ABS light is on.
• Schedule a diagnostic appointment with a mechanic.
• Avoid rough roads if possible until the issue is resolved.
Check if your vehicle's ABS system is covered under warranty.
This code has been more common in vehicles with high mileage or those frequently driven on rough terrain.
Moderate – Addressing this issue promptly can prevent further ABS system damage.
Driving with a malfunctioning ABS system can increase stopping distances and reduce vehicle control.
• Test on a flat, smooth road.
• Ensure vehicle is at operating temperature.
Wheel speed sensors are located at each wheel, usually near the brake rotor or hub assembly.
Q: Can I drive with code P1518?
A: It's possible, but not recommended as it may affect braking performance.
Q: How do I reset the ABS light?
A: Fix the underlying issue first, then use an OBD-II scanner to clear the code.
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.
View on Amazon
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.
View on Amazon
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.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.