Wheel Speed Sensor Input Circuit Malfunction
There's a problem with the wheel speed sensor input 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 sends data about how fast the wheels are turning to the computer. If that data is missing or wrong, it can’t properly manage things like traction control or ABS.
What the computer is actually seeing
The computer expects a varying voltage signal from the wheel speed sensor, typically between 0 and 5 volts. If it reads 0 volts steadily or loses the signal completely, it trips the code.
What a healthy reading looks like
The voltage from the sensor should fluctuate between 0.5 to 4.5 volts under normal conditions, depending on 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.
- 1Check the vehicle's wiring harness for obvious damage or disconnections, especially near the wheel speed sensor.
- 2Inspect the wheel speed sensor connector for corrosion or moisture; clean or repair as necessary.
- 3Using a multimeter, check the voltage drop across the wheel speed sensor — it should be between 0.5 to 4.5 volts while the vehicle is moving.
- 4If voltage is normal, test the wheel speed sensor output signal while the vehicle is in motion. If no signal is found, replace the sensor.
- 5If replacing the sensor doesn't resolve the issue, check for short circuits or opens in the wiring between the sensor and the computer.
Common causes
- Damaged wheel speed sensor
- Faulty wiring or connectors in the sensor circuit
- Bad alternator affecting voltage supply
- Corrosion at connector terminals
- Module failure
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not safe; the ABS and traction control may not work, increasing the risk of loss of control in slippery conditions.
Will this code come back after I clear it?
If the underlying issue isn't fixed, it will likely return.
Why is this code paired with multiple codes?
Wheel speed issues can affect multiple systems, leading to multiple codes related to traction control and braking functions.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →