Wheel Speed Sensor Circuit Failure
There's a problem with the wheel speed sensor 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 detects how fast each wheel is turning. If the circuit isn't working right, it can't send this info to the computer, which can mess with things like ABS and traction control.
What the computer is actually seeing
The ECU expects a varying voltage signal from the wheel speed sensor, typically between 0.5V and 1.0V when stationary, increasing to 0.5V to 5V as wheel speed increases. If it sees no signal or a constant voltage, it triggers this code.
What a healthy reading looks like
Normal wheel speed sensor output should vary from 0.5V while not moving to ~5V at higher speeds, dependent on vehicle 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 connectors at the wheel speed sensor for damage or corrosion. Repair any issues found.
- 2Check the wheel speed sensor output with a multimeter. It should fluctuate between 0.5V and 5V as the wheel turns. If not, the sensor may be faulty.
- 3Inspect the ABS control module and connections; look for any signs of damage or poor grounding. Fix as needed.
- 4Clear the code and perform a road test. If the code returns, consider replacing the wheel speed sensor.
Common causes
- Faulty wheel speed sensor
- Damaged wiring or connectors
- Poor grounding or short circuits
- Corroded sensor terminals
- Malfunctioning ABS control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; you may experience issues with ABS or traction control, so fix soon, but it's drivable for short distances.
Why does this code keep coming back?
Persistent wiring issues or a faulty ABS module can cause repeated codes. Thoroughly check connections and sensor.
What happens if I ignore this code?
Ignoring it can lead to reduced braking performance and loss of stability control during slippery conditions.
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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