Wheel Speed Sensor Circuit Failure
Indicates a problem with the 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 computer can't read the speed sensor on one of the wheels, which is crucial for traction control and ABS, affecting braking performance and stability.
What the computer is actually seeing
The ABS module is expecting a consistent voltage signal from the wheel speed sensor. It typically expects between 0.5V to 2.5V when the wheel is stationary and an increasing voltage as the wheel rotates.
What a healthy reading looks like
Voltage should vary from 0V (stationary) to about 5V (fully spinning).
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 wheel speed sensor for damage or corrosion. Decision: If damaged, repair or replace the wiring/connectors, then retest.
- 22. Use a multimeter to test the voltage output of the wheel speed sensor while spinning the wheel. Expected: Voltage should increase from 0V to ~5V. Decision: If the correct voltage is present, suspect another issue. If not, go to step 3.
- 33. Replace the wheel speed sensor with a known good one. Decision: If the code clears, the sensor was the problem. If it returns, check the ABS module.
Common causes
- Faulty wheel speed sensor
- Damaged wiring or connectors
- Bad ABS module
- Corrosion at sensor or connector
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not recommended to drive, as it can affect ABS and traction control, increasing the risk of wheel locking in slippery conditions.
Will this issue come back after fixing?
If the repair is done correctly, it should not return. If there's another underlying issue, like a bad ABS module, it might reoccur.
Why does this code sometimes trigger with other codes?
Related codes often indicate issues with the same system, like other sensor failures or module communication problems affecting wheel speed readings.
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