ABS Wheel Speed Sensor Failure
Issue with the ABS system's wheel speed sensor.
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What it means (plain English)
The ABS system uses wheel speed sensors on each wheel to monitor how fast they're spinning. If one of these sensors fails, the ABS can't operate correctly, making it less effective during braking.
What the computer is actually seeing
The ABS module detects a discrepancy in the wheel speed sensor's output voltage or signal frequency, which indicates a failure in reading the wheel's rotation speed.
What a healthy reading looks like
Expected voltage output from a functional speed sensor should be around 0.5 to 2.5 volts while the vehicle is moving. At rest, it should be a stable state, typically around 0 volts.
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.
- 1Inspect the wheel speed sensor wiring and connectors for damage or corrosion. Repair or replace as needed.
- 2Use a multimeter to check the wheel speed sensor output voltage while the vehicle is moving. It should range between 0.5 to 2.5 volts. If the voltage is outside this range, test the sensor.
- 3Check the physical condition of the sensor. Ensure it's mounted securely and free of dirt or debris that could affect readings.
- 4Clear the code and perform a road test to see if the issue returns. Monitor the ABS operation closely during braking.
Common causes
- Damaged sensor wiring or connectors
- Faulty wheel speed sensor
- Corroded or dirty sensor tip
- Issues with the ABS control module
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; you can drive the vehicle, but ABS won't work, which could affect braking in slippery conditions.
Will this code come back after clearing it?
If the underlying issue isn't fixed, yes, the code will likely return.
Why does this code appear along with codes for other wheel speed sensors?
If multiple sensors are failing, it can indicate a more significant issue in the ABS system or wiring, rather than just isolated sensor failures.
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