Wheel Speed Sensor Input Circuit Malfunction
This code indicates a problem with the wheel speed sensor signal circuit.
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 measures how fast each wheel is turning. If there's an issue, the computer can't determine wheel speed accurately, affecting systems like ABS or traction control.
What the computer is actually seeing
The control module expects to see a regular signal from the wheel speed sensor, typically a square wave voltage signal that varies between 0 and 5 volts as the wheel rotates.
What a healthy reading looks like
The wheel speed sensor should generate a voltage signal that fluctuates typically between 0.5 to 4.8 volts while in motion, indicating the wheel's rotational speed.
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 related to the wheel speed sensor for any visible damage or corrosion. If damaged, repair or replace.
- 22. Use a multimeter to test the voltage output of the wheel speed sensor with the vehicle in motion. Expected voltage should fluctuate between 0.5 to 4.8 volts. If there is no signal, replace the sensor.
- 33. If the sensor checks out, examine the ABS control module for faults. Scan for other codes that might indicate a broader issue with the braking system.
Common causes
- Faulty wheel speed sensor
- Damaged wiring or connectors leading to the sensor
- Corrosion at the connector or sensor
- Wheel bearing failure affecting sensor positioning
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's generally safe to drive, but you may lose ABS or traction control functionality until it's fixed.
Will this code come back after clearing?
If the underlying issue isn't resolved, it will likely return after clearing the code.
Why does this code pair with other codes?
It often pairs with codes from other wheel speed sensors or ABS-related issues, indicating a broader problem in the braking system.
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