Wheel Speed Sensor Circuit Low Input
There's a low voltage reading or open circuit in 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 is not sending the right signal to the computer, which should be around 0.5 to 2.5 volts while the vehicle is moving. If it's below that, the system thinks the sensor is broken.
What the computer is actually seeing
The ECM expects a voltage signal from the wheel speed sensor, usually between 0.5 to 2.5 volts when the wheel is turning. If it sees 0 volts or an open circuit, it triggers the code.
What a healthy reading looks like
Normal wheel speed sensor voltage should be between 0.5V to 2.5V. Zero or near-zero voltage indicates an issue.
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 wiring and connectors at the wheel speed sensor for damage or corrosion. If you find any issues, repair them and retest. If wiring looks good, move to step 2.
- 22. Disconnect the wheel speed sensor and measure the resistance with a multimeter. Expected resistance is usually around 1000-2000 ohms. If resistance is out of spec, replace the sensor.
- 33. Reconnect the sensor and use a scanner to check live data. Under normal conditions, you should see voltage readings when the wheel spins. If you see 0 volts with the wheel rotating, suspect a bad sensor or circuit issue.
- 44. Check the ABS control module for fault codes. If there's an issue with the module, it could cause faulty readings and trigger the code.
Common causes
- Faulty wheel speed sensor
- Damaged wiring or connector
- Corrosion at the sensor or connector
- Brake system issues or ABS module faults
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderately safe to drive but can affect ABS and traction control systems, increasing stopping distances in slippery conditions.
Will the problem come back after fixing?
If you repair the wiring and replace the sensor correctly, the code shouldn't return.
Why does this code relate to the ABS system?
The wheel speed sensor is critical for ABS operation, helping detect wheel lock-up; thus, errors in this sensor can impact overall vehicle safety.
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 →