C123C Code: Meaning, Causes, and Symptoms | OBD2 Codes

C123C – Sensor Cluster Mounting/Installation Performance

 

C123C Possible Symptoms

 

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

 

C123C Possible Causes

 

Faulty Sensor Cluster,Sensor Cluster harness is open or shorted,Sensor Cluster circuit poor electrical connection

 

C123C Description

 

The Anti-Lock Brake System (ABS) Module monitors the Sensor Cluster. The ABS Module sets the OBDII code when the Sensor Cluster is not to factory specifications.