C1143 — Wheel Speed Sensor LR Tone Ring Tooth Missing Fault

What it means

C1143 is an OBD-II diagnostic trouble code: Wheel Speed Sensor LR Tone Ring Tooth Missing Fault.

Typical fix

Confirm the code with an OBD-II scanner, then inspect the component or circuit named above. Consult a vehicle-specific service manual for the full diagnostic and repair procedure.