ABS Wheel Speed Sensor Fault
Indicates an issue with the anti-lock brake system's 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)
The ABS system uses wheel speed sensors to monitor how fast each wheel is turning. If a sensor fails, it sends a fault code to the computer, which can affect overall braking performance.
What the computer is actually seeing
The ABS control module sees a discrepancy in the readings from the wheel speed sensors, indicating that one or more sensors are not functioning correctly.
What a healthy reading looks like
Typical wheel speed sensor voltage output should be between 0.5 to 1.5 volts at rest and can vary up to 12 volts while 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 wiring and connectors at the wheel speed sensor for any damage or corrosion. If damaged, repair or replace as necessary. Decision point: Is wiring/connectors good? -> Yes (continue), No (repair/replace)
- 22. Check the resistance of the wheel speed sensor using a multimeter. Expected range is 1,000 to 1,500 ohms. Decision point: Is the resistance in range? -> Yes (continue), No (replace sensor)
- 33. If the sensor resistance is okay, use a scan tool to monitor the wheel speed sensor data while the vehicle is in motion. Decision point: Is the data showing valid speed readings? -> Yes (continue), No (replace sensor)
- 44. Check related systems and clear the code, then perform a road test. Decision point: Does the code return? -> Yes (further diagnosis needed), No (repair successful)
Common causes
- Damaged wheel speed sensor
- Faulty connector or wiring
- Corrosion at the sensor plug
- Signal interference from nearby components
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s moderately severe; you should fix it soon as it can affect braking performance.
Will this code come back after clearing it?
If underlying issues aren't addressed, it's likely to return.
Why does this code sometimes pair with other codes?
Multiple sensors can fail simultaneously, or wiring issues can affect multiple systems.
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