Wheel Speed Sensor Fault
The system has detected a problem with the 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 computer isn’t getting the right signals from one or more wheel speed sensors, which measure how fast the wheels are turning. This can mess with traction control or ABS.
What the computer is actually seeing
The computer looks for consistent signals from the wheel speed sensors, typically 0-5 volts. If one sensor shows odd values (e.g., zero when the wheel is turning), it triggers this code.
What a healthy reading looks like
Normally, wheel speed sensors should provide a voltage signal varying between 0-5 volts, depending on wheel speed. Expect roughly 0.5 volts at a standstill, increasing to near 4-5 volts when the vehicle is in motion.
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 wheel speed sensor wiring and connectors for damage or corrosion. Fix as necessary.
- 2Check if the wheel speed sensors are clean and free from debris. Clean if needed.
- 3Use a multimeter to test the voltage at the wheel speed sensor while the vehicle is in motion, confirming it fluctuates correctly. If not, replace the sensor.
- 4If sensors are fine, scan for additional fault codes that might indicate a failing ABS control module.
Common causes
- Bad wheel speed sensor
- Corroded or damaged wiring
- Faulty ABS control module
- Dirty sensor or reluctor wheel
- Connector issues at the sensor
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s best to fix it soon, as it affects traction control and ABS, which can compromise safety.
Will the code come back after clearing it?
If the underlying issue isn't fixed, the code is likely to return.
Why do I see this code alongside other codes?
Related codes may indicate issues with multiple sensors or the ABS module, which can share wiring or components.
Working a real vehicle right now?
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