Wheel Speed Sensor Circuit Failure
There is a fault 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 helps the vehicle know how fast each wheel is turning. If there's a problem in its circuit, the system can't get the right information, which can affect things like traction control and ABS.
What the computer is actually seeing
The ABS module is expecting a voltage signal from the wheel speed sensor, typically between 0 and 5 volts depending on the wheel speed. If this signal is interrupted or outside the expected range, the code sets.
What a healthy reading looks like
A functioning sensor should output a signal between 0.5V at low speed up to 4.5V at high speed, with a frequency that varies based on wheel rotation.
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 the wheel speed sensor for physical damage or debris. Decision: Is the sensor damaged? If yes, replace it. If no, proceed to step 2.
- 22. Check the wiring and connectors for signs of wear, corrosion, or breakage. Decision: Are there any issues found? If yes, repair or replace the affected wiring/connectors. If no, proceed to step 3.
- 33. Using a multimeter, test the voltage at the sensor connector while the wheel is being turned. Expected voltage is between 0.5V and 4.5V. Decision: Is the voltage within range? If no, the sensor may be faulty. Replace it. If yes, proceed to step 4.
- 44. If equipped, check the ABS module for any additional fault codes or software updates. Decision: Are there any other related codes? If yes, address those issues. If no, and all checks are good, the problem may lie in the ABS module itself.
Common causes
- Damaged wheel speed sensor
- Wiring issue in the sensor circuit
- Faulty wheel bearing
- Corroded or poor electrical connection at the sensor
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I still drive the vehicle with this code?
Yes, but without proper wheel speed data, systems like ABS and traction control may not function correctly, compromising safety.
Will this fault reappear after I fix it?
If all related issues are addressed, it should not come back. Monitor the system after repairs to ensure no other codes arise.
Why do I see this code paired with others like C1010?
Codes often appear together when multiple sensors or circuits share common issues, like wiring problems or a faulty ABS module.
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