ABS Wheel Speed Sensor Fault
The ABS has detected a problem with a wheel speed sensor.
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)
Your ABS system relies on signals from the wheel speed sensors to know how fast each wheel is turning. If one of those sensors is faulty, it can confuse the ABS and lead to braking issues.
What the computer is actually seeing
The vehicle's ABS module monitors the signals coming from the wheel speed sensors during vehicle operation. If the signal from any sensor alternates between valid readings and a complete drop-off (0 volts) for a specified period (usually over 3 seconds), it triggers a fault code.
What a healthy reading looks like
Expected voltage from a functioning sensor should be between 0.5V to 5V when the wheel is rotating, and continuity should be present across the sensor's connector pins.
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 related to the ABS wheel speed sensor. Look for any obvious damage, corrosion, or loose connections. Decision point: Is there visible damage? If yes, repair as needed. If no, proceed to step 2.
- 22. Use a multimeter to check sensor voltage while the vehicle is in motion. Expected range: 0.5V to 5V. Decision point: Are the readings in the expected range? If yes, proceed to step 3. If no, replace the faulty wheel speed sensor.
- 33. Clear the code and take the vehicle for a test drive. Monitor ABS operation during varying speeds. Decision point: Does the code return? If yes, consider testing or replacing the ABS control module.
Common causes
- Failed ABS wheel speed sensor
- Damaged wiring or connectors to the sensor
- Corrosion on the sensor or connector
- Faulty ABS control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but be aware that you may lose ABS functionality, which can affect braking performance, especially in slippery conditions.
Will this code come back after I clear it?
It may return if the underlying issue, like a faulty sensor or bad wiring, is not resolved.
Why does this code appear with other codes?
Multiple codes can appear if different wheel speed sensors have similar issues, or if there's a larger problem in the ABS system affecting multiple circuits.
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