Wheel Speed Sensor (WSS) Signal Failure
Indicates a failure in the wheel speed sensor signal.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The wheel speed sensor isn't sending the correct signal to the computer, which can cause issues with ABS control and traction.
What the computer is actually seeing
The ABS control unit expects a voltage signal from the wheel speed sensor corresponding to the wheel's RPM, typically between 0-12 volts depending on speed, and should switch rapidly as the wheel turns.
What a healthy reading looks like
Wheel speed signals should vary between 0-5 volts as the vehicle moves, ideally showing consistent changes in voltage as wheel speed increases or decreases.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connector at the wheel speed sensor for visible damage or corrosion. If damaged, repair or replace as necessary; Decision: If wiring is fine, continue.
- 22. Check the resistance of the wheel speed sensor; it should be between 1,000 - 2,500 ohms. If out of spec, replace the sensor; Decision: If resistance is good, continue.
- 33. Use a scan tool to monitor the wheel speed sensor output while spinning the wheel. You should see a fluctuation in the signal. If there's no signal, replace the sensor; Decision: If signal is present, continue.
- 44. Inspect the ABS module for faults. If its diagnostics indicate a fault, consider replacing it; Decision: If no faults are found in the module, the issue could be with the vehicle's internal wiring.
Common causes
- Damaged wheel speed sensor
- Corroded or damaged wiring harness
- Faulty ABS module
- Bad wheel bearing affecting sensor alignment
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive my vehicle with this code?
Yes, but ABS and traction control may not function correctly, leading to potentially unsafe driving conditions.
Will this code come back after clearing?
If the underlying issue is not resolved, the code will likely return.
Why is this code paired with other codes?
Faults in the wheel speed sensor can also affect other systems like traction control and stability control, leading to multiple codes being logged.
Working a real vehicle right now?
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