Wheel Speed Sensor Signal Fault
There’s 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 tells the computer how fast each wheel is turning. If it's not working right, the brakes or traction control could act up.
What the computer is actually seeing
The control module expects a pulse signal correlated to wheel speed, typically a square wave with a frequency that increases as speed increases. If it sees no signal or an inconsistent signal, it logs a fault.
What a healthy reading looks like
The output voltage should be between 0-12 volts (often around 5V in some systems). Expected frequency varies depending on vehicle speed, usually 1-10 Hz at low speed and up to 100 Hz or more at highway speeds.
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 wheel speed sensor wiring and connectors for damage or corrosion. Decision: If damaged, repair or replace.
- 22. Check for proper alignment of the wheel speed sensor to the gear or tone ring. Decision: If misaligned, adjust or replace the sensor as necessary.
- 33. Measure the voltage at the output of the wheel speed sensor while the vehicle is moving. Expect around 5V; if there's no signal or the signal is erratic, replace the sensor. Decision: If good, continue troubleshooting.
- 44. Use a scan tool to monitor the live data for the wheel speed readings during a test drive. Decision: If readings are inconsistent, replace the wheel speed sensor.
Common causes
- Broken or damaged wheel speed sensor
- Wiring issue (broken wire or poor connection)
- Faulty wheel bearing with an integrated sensor
- Instrument cluster or ABS module fault
Typical repair cost
$$$-$$$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It is moderately safe, but be aware of potential issues with traction control and ABS until fixed.
Will the code come back?
If the problem isn't fixed (like a bad sensor or wiring), yes, the code will likely return.
Why does this code show up with other codes?
Wheel speed sensor faults often occur with ABS or traction control issues, which depend on accurate wheel speed.
Working a real vehicle right now?
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