Wheel Speed Sensor Input Error
The ECM has detected an issue with the wheel speed sensor signal.
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 computer looks at data from the wheel speed sensors to know how fast each wheel is turning. If it sees the wheel speed is not what it should be, it flags an error.
What the computer is actually seeing
The ECM monitors voltage or frequency signals from the wheel speed sensors. If the signal stays below a threshold (usually below 0.5V for more than 2 seconds), it triggers this code.
What a healthy reading looks like
Normal wheel speed sensor voltage should be between 0.5V to 5V, depending on wheel speed. Frequency signals should reflect speed changes based on vehicle movement.
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 for the wheel speed sensors. Look for frays, corrosion, or loose connections. If found, repair these issues before further testing.
- 22. Check the wheel speed sensors' resistance with a multimeter. Resistance should typically be between 1,000 to 2,000 ohms. A reading outside this range could indicate a faulty sensor.
- 33. Verify the signal output from the sensor with a scan tool while the vehicle is in motion. Ensure the voltage changes accordingly. If it stays constant or is out of expected range, replace the sensor.
- 44. If the sensor is ok, check the wheel bearing for play or wear, which could misalign the sensor and disrupt proper function.
Common causes
- Faulty wheel speed sensor
- Damaged wiring or connectors to the sensor
- Bad wheel bearing causing sensor misalignment
- Low battery voltage affecting sensor output
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally safe to drive, but be cautious as you may experience issues with traction control and ABS functions.
Will this issue come back after repairs?
If the root cause is properly addressed, it should not come back. However, monitor the system after repairs.
Why does this code sometimes pair with other codes?
This code can accompany others related to traction control or ABS, as they all rely on similar wheel speed sensor data.
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