Wheel Speed Sensor Left Front Circuit Range/Performance Problem
There's an issue with the left front 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 left front wheel speed sensor measures how fast the wheel is spinning. If it sends readings that are too high or low, the vehicle's computer thinks there's a problem with that wheel's performance.
What the computer is actually seeing
The ABS module monitors the voltage signal from the left front wheel speed sensor. It expects the signal to vary between 0.5V (at rest) and up to 12V (at high speeds). If the readings go outside this expected range, it triggers the code.
What a healthy reading looks like
When the vehicle is stationary, the sensor should read around 0.5V. At 30 mph, it should be roughly 3-4V, and at over 60 mph, it should reach close to 12V.
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. Check the left front wheel speed sensor wiring and connectors for damage or corrosion. If found, repair or replace accordingly.
- 22. Measure the voltage at the wheel speed sensor connector while spinning the left front wheel. It should increase from 0.5V at rest to around 12V at speed. If voltage readings are off, replace the sensor.
- 33. If the sensor is good, test the ABS control module for fault codes related to the left front wheel. If additional issues are found, address them before retesting.
Common causes
- Faulty left front wheel speed sensor
- Damaged wiring or connector for the sensor
- Corrosion or dirt on the sensor
- Faulty ABS control module
Typical repair cost
$$ - $$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's safe to drive, but you may lose ABS and traction control functions, so proceed with caution.
Will the code come back after I clear it?
If the underlying issue isn't fixed, the code is likely to return after some driving.
Why does this code show up with others?
Wheel speed sensor codes often pair with others related to ABS and traction control systems, indicating possible wider issues.
Working a real vehicle right now?
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