C0652
Left Front Wheel Speed Sensor B Range/Performance
Left Front Wheel Speed Sensor B Range/Performance: the signal is implausible or outside the valid range. Wheel-speed signals feed ABS, ESC, traction control and the speedometer.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
Ordered by how often each turns out to be the cause.
- Tone ring damaged or contaminatedCommon
- Sensor element aged beyond calibration windowLess likely
- Sensor mounting loose - signal dampingLess likely
Parts involved
- Lf Wss B
C0652 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.