Left Front Wheel Speed Sensor Circuit Range/Performance Problem
Wheel speed sensor signal issue on the left front wheel.
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)
This code means the vehicle's computer is getting weird readings from the left front wheel speed sensor, which measures how fast that wheel is spinning.
What the computer is actually seeing
The ABS control module monitors the voltage signal from the left front wheel speed sensor, typically expecting a voltage between 0.5V and 2.5V when the wheel is moving. If the signal is out of expected range (>2.5V or <0.5V, or no signal), it triggers this code.
What a healthy reading looks like
Wheel speed sensor signal should be between 0.5V and 2.5V while the vehicle is moving and an expected frequency of 0-20 Hz at idle.
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 left front wheel speed sensor and wiring for any visible damage or wear. Decision: If damaged, repair or replace as needed.
- 22. Check the connector for corrosion or loose connections. Decision: Clean or secure the connector if needed.
- 33. Measure the voltage at the wheel speed sensor connector while the vehicle is moving. It should read between 0.5V and 2.5V. Decision: If out of range, replace the sensor. If within range, suspect ABS module or wiring issues.
- 44. Check continuity of the wiring between the sensor and the ABS module with a multimeter. Decision: If there’s no continuity or high resistance, repair the wiring.
Common causes
- Damaged wheel speed sensor
- Faulty wiring or connectors
- Corrosion at the sensor
- Faulty ABS control module
- Wheel bearing issues
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive my car with this code?
Yes, but the ABS may not function properly, increasing your stopping distance without the anti-lock feature. It's best to get it checked soon.
Will this code come back after I clear it?
If the underlying issue isn't fixed, the code is likely to reappear after erasing it.
Why do I see this code with other codes?
Often, wheel speed sensors can fail or behave inconsistently, leading to multiple codes related to wheel speed, traction, ABS, or stability control.
Working a real vehicle right now?
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