Wheel Speed Sensor Input Circuit Failure
The PCM detected an electrical failure in the wheel speed sensor circuit for a specific wheel.
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What it means (plain English)
The computer is seeing a problem with the wheel speed sensor that helps it understand how fast each wheel is turning, which is crucial for traction control and ABS.
What the computer is actually seeing
The Powertrain Control Module (PCM) monitors the voltage signal from the wheel speed sensor; expected voltage should be between 0.5V to 5V as the wheel spins.
What a healthy reading looks like
0.5V to 5V; Zero voltage indicates a fault or disconnection.
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 as needed.
- 2Check for wheel speed sensor input voltage with a multimeter; expect 0.5V to 5V while the wheel spins. If no voltage, suspect a bad sensor or wiring issue.
- 3Inspect the sensor itself for any physical damage and ensure it's aligned correctly with the tone ring on the wheel hub.
- 4If wiring and sensor are good, confirm the integrity of the circuit back to the PCM harness. Test the resistance of the wiring; it should be less than 5 ohms.
- 5If you still have issues, monitor for faults in the PCM that may misinterpret the sensor signal.
Common causes
- Damaged wheel speed sensor
- Open circuit in wiring harness
- Corroded or loose connector
- Faulty Powertrain Control Module (PCM)
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive the vehicle with this code?
Yes, but be cautious; traction control and anti-lock brakes may not function properly.
Is this a common problem?
Yes, especially if the vehicle is exposed to harsh conditions or if the wheel sensors are damaged during tire changes.
How can I prevent this issue from reoccurring?
Regularly inspect wheel speed sensors and wiring, especially in areas prone to corrosion or physical damage.
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