Wheel Speed Sensor Signal Missing
The wheel speed sensor for the traction control system is not sending a signal.
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 wheel speed sensor isn't working, so the system can't tell how fast the wheels are turning. This can mess with the traction control and ABS functions.
What the computer is actually seeing
The traction control module expects a voltage signal from the wheel speed sensor between 0.5V and 2.5V, changing with wheel speed. A constant reading indicates a sensor issue.
What a healthy reading looks like
Voltage at the wheel speed sensor should vary between 0.5V and 2.5V while driving; otherwise, there’s a problem.
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. Check the wiring and connector for the wheel speed sensor for damage or corrosion. If damaged, repair or replace as necessary. Decision point: Does the wiring look good? If yes, go to step 2. If no, fix the wiring.
Common causes
- Faulty wheel speed sensor
- Wiring issues (broken, frayed, or shorted wires)
- Connector corrosion or loose connections
- Failed traction control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable, but you may lose ABS and traction control functions, which can be dangerous in slippery conditions.
Will the code come back after I clear it?
If the underlying issue isn't resolved, yes, the code will likely return.
Why does this code pair with others like C1091?
Multiple codes can occur if there are issues with different sensors or components in the same system.
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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