Wheel Speed Sensor Input Signal - Invalid
Indicates that the wheel speed sensor signal is missing or invalid.
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)
This code means one of the wheel speed sensors is not sending a valid signal to the computer, which can lead to issues with ABS and traction control systems.
What the computer is actually seeing
The vehicle's computer expects a consistent voltage signal from the wheel speed sensors, typically around 0.5V to 12V. An invalid signal might be less than 0.2V or more than 12V, or completely absent.
What a healthy reading looks like
Voltage from wheel speed sensors should be between 0.5V to 12V when the wheel is turning; when stationary, expect 0V.
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. Verify fuse related to ABS and wheel speed sensors is good. If blown, replace and retest.
- 22. Inspect wheel speed sensor connectors and wiring for damage or corrosion. Repair as needed.
- 33. Test the voltage output of the wheel speed sensor(s). Use a multimeter; anticipate 0.5V to 12V when the wheel is rotating. If not, replace the sensor.
- 44. Check the tone ring for any missing or damaged teeth. Replace if necessary. If the tone ring is fine, check the ABS module output for faults.
Common causes
- Faulty wheel speed sensor
- Bad wiring or connector
- Corrosion at the sensor connector
- Broken tone ring or wheel bearing
- Electrical issues in ABS module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It is generally safe to drive, but you may experience ABS system issues and should fix it soon.
Will the code come back after clearing?
If the issue persists, the code will likely return until the underlying problem is fixed.
Why does this code pair with others?
Multiple codes can indicate issues with both front and rear wheel speed sensors working together in the ABS system.
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