C1104 Code: Meaning, Causes, and Symptoms | OBD2 Codes
C1104 – Front Left Sensor 1
C1104 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C1104 Possible Causes
ABS Wheel Sensor not properly installed,ABS Wheel Sensor rotor or encoder damaged,ABS Wheel Sensor rotor loose on axle,Faulty ABS Wheel Sensor,ABS Wheel Sensor harness is open or shorted,ABS Wheel Sensor circuit poor electrical connection,Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit)
When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular wave) and transmits them to the Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit). The ABS Actuator and Electric Unit monitors the ABS Wheel Sensor. The ABS Actuator and Electric Unit sets the OBDII code when the ABS Wheel Sensor is not to factory specifications.