C1102 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1102 – ABS Acceleration Switch Circuit Failure


C1102 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C1102 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)


C1102 Description


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 ABS actuator and electric unit (control unit). The Anti-Lock Brake System (ABS) Module monitors the ABS Wheel Sensor. The ABS Module sets the OBDII code when the ABS Wheel Sensor is not to factory specifications.