Wheel Speed Sensor Signal Fault
Issues detected with 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 computer is not getting the right signal from one of the wheel speed sensors, meaning it can't tell how fast a wheel is turning.
What the computer is actually seeing
The ABS control module expects a wheel speed signal in the range of 0 to 12 volts, changing as the wheel turns. If the voltage stays static or is out of range, it triggers the code.
What a healthy reading looks like
Expected wheel speed signals should fluctuate between 0 to 12 volts as the vehicle moves, with nearly equal readings across all four wheels.
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 connectors at the affected wheel speed sensor. Look for fraying, corrosion, or disconnections.
- 22. Measure the voltage at the wheel speed sensor connector while the vehicle is in motion. You should see voltages between 0-12V.
- 33. Compare readings from all wheel speed sensors. If one sensor shows a significantly different voltage, it is likely faulty.
- 44. If all sensors are within range, check the ABS control module for proper operation—wiring diagrams can help confirm pinouts.
Common causes
- Damaged wheel speed sensor
- Corroded or broken wiring
- Bad connector at the wheel sensor
- Faulty ABS control module
- Incorrect tire sizes affecting readings
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I still drive with this code?
It depends on symptoms; if ABS is disabled and you're experiencing braking issues, it's not safe to drive.
Will this code come back after clearing?
Yes, if the underlying issue isn't fixed, it will return after driving.
Why does this code sometimes appear with traction control issues?
The ABS system works with traction control; if wheel speed signals are faulty, it affects both systems.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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