Wheel Speed Sensor Circuit Range/Performance Problem (Left Front)
Issue detected with the left front wheel speed sensor's 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 is not getting the right speed data from the left front wheel speed sensor, which is used for ABS and traction control.
What the computer is actually seeing
The control module expects a voltage signal between 0.5V and 2.5V from the wheel speed sensor based on its rotation speed. If the voltage reading is out of this range or is intermittent, it sets this code.
What a healthy reading looks like
Voltage signal should vary from 0.5V (at zero speed) to around 2.5V (at higher speeds) as the wheel rotates.
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. Visually inspect the wiring and connector to the left front wheel speed sensor for damage or loose connections. Repair as necessary. Decision: If fixed, clear code and test drive.
- 22. Using a multimeter, check the voltage output from the left front wheel speed sensor. Expect a signal between 0.5V and 2.5V while spinning the wheel. Decision: If out of range, replace the sensor. If within range, proceed to step 3.
- 33. Check the brake fluid level and condition; make sure it's clean and at the proper level. Decision: If low or contaminated, replace fluid and test. If okay, proceed to step 4.
- 44. Check the ABS control module for faults and connectivity. Use a scan tool to see if the module is receiving data from the sensor. Decision: If no data, replace the sensor; if data is present but erratic, further inspect wiring or module.
Common causes
- Faulty wheel speed sensor
- Wiring issues or damaged connector to the sensor
- Brake fluid contamination affecting sensor operation
- Incorrect installation of a new sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Moderate severity means it is generally safe to drive, but features like ABS may not work properly.
Will this code come back after repairs?
If the underlying issue is resolved, the code should not return.
Why does this code affect my traction control?
The wheel speed sensor provides critical data for the traction control system to function.
Working a real vehicle right now?
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