Wheel Speed Sensor Range/Performance Problem (Left Front)
Issue with the left front wheel speed sensor's performance.
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 left front wheel speed sensor isn't sending the expected speed data to the computer, which can affect traction control and ABS functions. This can happen if the sensor is damaged or there's a wiring problem.
What the computer is actually seeing
The ABS or stability control module compares the voltage from the left front wheel speed sensor against expected values based on vehicle speed. If the voltage or signal frequency deviates significantly (more than 10% off expected), it sets this code.
What a healthy reading looks like
Expected signal voltage is typically around 0.5V to 2.5V when the vehicle is stationary, and should vary proportionally with wheel speed, usually increasing to 5V or more at higher speeds.
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 wiring and connector for damage at the left front wheel speed sensor.
- 2Test the left front wheel speed sensor signal with a multimeter. Expected voltage should be between 0.5V and 5V while spinning the wheel.
- 3Check that the wheel is not binding and that the sensor is correctly aligned and secured in place.
Common causes
- Faulty left front wheel speed sensor
- Damaged wiring or connectors to the speed sensor
- Wheel bearing issues affecting sensor position
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's drivable, but be aware that ABS and traction control may not function properly, increasing the risk in slippery conditions.
Will this code come back after clearing it?
If the issue isn't fixed, the code is likely to return after a short drive cycle.
Why does this code pair with others like C0473?
Codes in this range often relate to multiple wheel speed sensors, indicating similar issues across wheels.
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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