Wheel Speed Sensor Missing Signal
The system is detecting a missing signal from a 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 control module expects to see a constant signal from the wheel speed sensor that tells it how fast each wheel is turning. When it doesn't receive this signal, it sets a code to alert you.
What the computer is actually seeing
The wheel speed sensor provides a pulsed signal that varies with wheel speed. Normally, it outputs around 0-12 volts depending on wheel rotation. Missing this signal for a specified period (usually over 0.5 seconds) triggers the code.
What a healthy reading looks like
Signal voltage should vary between 0.5 to 6 volts while the vehicle is moving. If stationary, the signal should show a consistent output indicating no movement.
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 to the wheel speed sensor for damage or corrosion.
- 22. Verify the sensor alignment and mounting, ensuring it's securely attached and correctly positioned.
- 33. Check the wheel speed sensor output using a multimeter; expect a variable voltage while spinning the wheel.
- 44. If voltage is incorrect or absent, replace the wheel speed sensor.
- 55. If sensor is operational, check the system for short circuits or open circuits in the harness.
- 66. Clear the code and test drive the vehicle; recheck for code reappearance.
Common causes
- Faulty wheel speed sensor
- Damaged wiring or connectors to the sensor
- Poor sensor alignment or mounting
- Corroded terminals
- Module failure
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's best to address it soon, as it can affect traction control and anti-lock braking systems.
Will this code come back after being cleared?
If the underlying issue isn't fixed, yes, the code will likely return.
Why does this code also relate to other wheel speed sensors?
Multiple sensors work together; failure in one can trigger codes on others due to shared data paths.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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