Wheel Speed Signal Error - Front Left Wheel
The front left wheel speed sensor is reporting an issue.
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 is not getting a proper signal from the front left wheel speed sensor, which measures how fast the wheel is turning.
What the computer is actually seeing
The ABS module expects a speed signal between 0 to 150 mph, typically in a range of 0.5 to 5 volts depending on wheel speed; if the voltage is outside this range, the fault triggers.
What a healthy reading looks like
0.5 to 5 volts signal output when wheel speed is between 0 to 150 mph.
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 front left wheel speed sensor for physical damage or debris.
- 22. Check the wiring and connectors for the wheel speed sensor for any signs of wear or corrosion.
- 33. Measure the voltage output from the sensor while spinning the wheel; should be 0.5 to 5 volts; if not, replace the sensor.
- 44. Use a scan tool to check for other related codes or active faults in the ABS system.
- 55. If all seems good and no obvious issues found, check the ABS module for faults.
Common causes
- Dirty or damaged wheel speed sensor
- Bad electrical connection or wiring harness
- Faulty ABS control module
- Faulty wheel bearing causing sensor misalignment
- Non- OEM tire sizes affecting readings
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
It's moderate severity; you can drive but may experience ABS issues and possible traction control failures.
Will this code come back after I clear it?
If the underlying problem isn't fixed, yes, it likely will return.
Why does this code sometimes pair with others?
Many ABS issues can affect multiple wheels or systems, resulting in multiple codes being stored.
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 →