Wheel Speed Sensor (WSS) Fault
Wheel speed sensor is malfunctioning or not communicating.
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 is supposed to measure how fast each wheel is spinning. When it fails, the system thinks there's a problem with your vehicle's brakes or stability control.
What the computer is actually seeing
The computer expects a consistent voltage signal from the wheel speed sensor, typically between 0 to 5 volts. If the signal is erratic or missing, it triggers the fault code.
What a healthy reading looks like
Normal wheel speed should vary with vehicle speed, showing expected voltage changes corresponding to speed. Each wheel should provide a signal proportional to its rotations per minute in a typical range of 0-5 volts.
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.
- 1Visual inspect the wiring and connectors at the wheel speed sensor for damage.
- 2Test the wheel speed sensor's resistance; it should be within manufacturer specs (typically 1000-2000 ohms).
- 3Using a scan tool, compare the voltage signals from each wheel speed sensor while in motion; they should read similar values. If one is significantly different, replace that sensor.
- 4Check the ABS module for faults. If there are multiple sensor errors, it could indicate module failure.
Common causes
- Damaged wheel speed sensor
- Wiring issues (frays, shorts, or corrosion)
- ABS module failure
- Faulty connector
- Mechanical obstruction on the wheel sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s moderately safe, but be cautious. The vehicle's stability control may not function, increasing accident risk.
Will this code come back after clearing?
If the underlying issue is not fixed, yes, the code will likely reappear.
Why does it pair with other codes?
Often, multiple sensors report to the same module, so failure in one can cause faults in others.
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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