Left Front Wheel Speed Sensor - Mechanical
Left Front Wheel Speed Sensor - Mechanical: a mechanical fault is present — typically a damaged tone ring, excessive air gap, or loose mounting. Wheel-speed signals feed ABS, ESC, traction control and the speedometer.
Affected components
- Wss lf
- Tone ring lf
Common causes
- High likelihood: Tone ring damaged
Possible symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Diagnostic notes
- The malfunction indicator lamp may illuminate
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.