ABS Wheel Speed Sensor Circuit
This code indicates a fault in the ABS wheel speed sensor circuit.
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 ABS module isn't getting the right signal from one of the wheel speed sensors, which helps control the anti-lock brake system. This affects braking performance and can lead to issues in slippery conditions.
What the computer is actually seeing
The ABS control module sees the wheel speed sensor signal either as too low or too high compared to what it expects to see, which should be in the range of 0-5 volts on average depending on wheel rotation.
What a healthy reading looks like
Normally, the wheel speed sensor should output a voltage between 0.5V to 4.5V when the wheel is turning, and the reading should change as wheel speed changes.
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. Check the wiring and connectors at the wheel speed sensor for corrosion or damage.
- 22. Measure the voltage output from the wheel speed sensor with the wheel turning; it should be between 0.5V and 4.5V. If not, replace the sensor.
- 33. Inspect the tone ring for cracks or damage; replace if necessary.
- 44. Clear the code and test drive. If the code returns, consider checking the ABS module for faults.
Common causes
- Corroded or damaged wheel speed sensor wiring
- Faulty wheel speed sensor
- Poor electrical connections at the sensor or ABS module
- Damaged tone ring on the wheel hub
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's best to fix it soon since it affects braking control, especially under hard braking or slippery conditions.
Will this code come back after I clear it?
If the underlying issue isn't fixed, yes, it will return.
Why does this code sometimes pair with other ABS codes?
Multiple codes can appear if several sensors or circuits are faulty or if they share wiring harnesses.
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