C101B Code: Meaning, Causes, and Symptoms | OBD2 Codes

C101B – Vacuum Pressure Sensor Circuit B


C101B Possible Symptoms


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


C101B Possible Causes


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


C101B Description


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