Wheel Speed Sensor Fault
This code indicates a problem with the wheel speed sensor 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 measures how fast a wheel is turning. If it malfunctions, the system can't tell if the wheels are spinning correctly, which can lead to issues with brakes or traction control.
What the computer is actually seeing
The ABS module expects a certain voltage or frequency signal from the wheel speed sensor, typically ranging from 0 to 5 volts. If it fails or is inconsistent, it triggers this code.
What a healthy reading looks like
Voltage output of 0.5 to 5 volts when wheel is turning, frequency signals varying depending on speed but should not drop to 0 volts while wheels are moving.
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 wiring and connectors related to the wheel speed sensor for damage or corrosion.
- 2Check the wheel speed sensor connector for dirt or moisture; clean if necessary.
- 3Test the wheel speed sensor using a multimeter; expect a voltage between 0.5 to 5 volts while the wheel is spinning. If voltage is absent or erratic, replace the sensor.
- 4If the sensor tests okay, check the ABS module; perform a continuity test on the wiring from the sensor to the module.
Common causes
- Damaged or corroded wire harness
- Faulty wheel speed sensor
- Poor sensor connection or dirty connector
- Bad ABS module
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive the vehicle with this code?
It's not safe; loss of traction control and ABS can occur, leading to brake issues.
Will this code come back after I clear it?
If the issue isn't fixed, the code will likely return once the system detects the fault again.
Why does this code pair with other C codes?
They often denote related sensor issues as part of the ABS system, indicating multiple faults within that system.
Working a real vehicle right now?
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