Wheel Speed Sensor Internal Fault
The vehicle's wheel speed sensor has detected an internal error.
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 supposed to send signals about how fast each wheel is spinning. If there's a problem inside the sensor, it can't send the correct information to the computer, which can affect braking and traction control systems.
What the computer is actually seeing
The computer detects an inconsistency in the signal from the wheel speed sensor, indicating it's malfunctioning. It expects a steady voltage change that corresponds to wheel rotation, but sees erratic or no output.
What a healthy reading looks like
Typically, a working wheel speed sensor sends a signal voltage between 0.5V to 3V, changing in frequency as the wheel speed increases.
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 wiring and connectors at the wheel speed sensor for damage or corrosion. If damaged, repair or replace the wiring/connector. Decision point: Is the wiring intact?
- 22. Test the wheel speed sensor with a multimeter to check the voltage output while spinning the wheel. Look for a 0.5V to 3V output. Decision point: Is the output within the expected range?
- 33. If the sensor output is good, check the vehicle’s ABS module and its ground connections. Ensure there are no issues there. Decision point: Are the module and grounds okay?
- 44. If all else checks out, replace the wheel speed sensor if it was initially faulty.
Common causes
- Damaged wheel speed sensor
- Faulty wiring or connectors
- Corrosion or dirt affecting sensor operation
- Brake system issues
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally safe but could affect traction control and ABS performance.
Will this code come back after repair?
If the sensor or wiring is fixed, it should not come back unless there’s a new issue.
Why does this code appear with other sensor faults?
Multiple codes can occur if one system failure impacts others, like ABS or traction systems.
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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