C104B Code: Meaning, Causes, and Symptoms | OBD2 Codes

C104B – Abnormality In Front Left Wheel Inlet Valve System

 

C104B Possible Symptoms

 

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

 

C104B Possible Causes

 

Faulty Anti-Lock Brake System (ABS) Electronic Control Unit (ECU),ABS-ECU harness is open or shorted,ABS-ECU circuit poor electrical connection

 

C104B Description

 

The Anti-Lock Brake System (ABS) Electronic Control Unit (ECU) the power supply circuit for the solenoid valve. The solenoid valve is energized by the valve relay, which is incorporated in ABS-ECU. The valve relay, which is incorporated in ABS-ECU, is always energizing the solenoid valve unless the initial check is in progress when the ignition switch is turned on, or the recurrent system check is in progress. ABS-ECU activates the solenoid valve by turning on its driving transistor.