Wheel Speed Sensor Circuit Failure
There’s an issue 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 computer is not getting the right information from the wheel speed sensor, which tells it how fast the wheels are turning. This can cause the anti-lock braking system (ABS) to act incorrectly or not at all.
What the computer is actually seeing
The ABS module expects a wheel speed signal that fluctuates with wheel rotation at a certain frequency; if it doesn't see this, it flags a fault code.
What a healthy reading looks like
The wheel speed sensor typically outputs a voltage between 0.5 to 1.5 volts when the wheels are stationary. As the wheel starts to turn, the voltage should fluctuate based on the wheel 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.
- 1Inspect the wiring and connector for the front left wheel speed sensor—look for damage or corrosion.
- 2Check the wheel speed sensor output with a multimeter—it should show fluctuating voltage when the wheel is turned.
- 3If the voltage is steady or zero, replace the wheel speed sensor.
- 4If the wiring and sensor are good, check the ABS module's input connection—ensure there are no faults.
- 5If all of the above are good but the code persists, suspect a faulty ABS module.
Common causes
- Bad wheel speed sensor
- Damaged wiring or connector
- Corroded connector pins
- Faulty ABS module
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive with this code active?
It's moderate severity; you can drive, but be aware that ABS functionality may be compromised.
Will the code come back after clearing?
If the issue isn't fixed (like a bad sensor or wiring), it will likely return.
Why does this code sometimes pair with other C codes?
Sensor issues often affect multiple areas; one sensor failing can throw off the signals for 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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