C1155 Wheel Speed Sensor LF Input Circuit Failure
What does C1155 mean on a Ford?
C1155 — Wheel Speed Sensor LF Input Circuit Failure. This Ford-enhanced code applies to Escape, Fusion, Focus, Taurus, Explorer.
Common causes of C1155
- Failed left front wheel speed sensor
- Open or shorted LF sensor circuit
- Damaged LF tone ring
- Excessive LF bearing play
- Corroded ABS module connector
How to fix C1155
- Read all four wheel speeds on a roll test
- Test LF sensor resistance and output
- Inspect the tone ring and bearing play
- Check circuit wiring end to end
- Replace the sensor after circuit confirmation