C2101 Code: Meaning, Causes, and Symptoms | OBD2 Codes
C2101 – Battery Voltage High
C2101 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C2101 Possible Causes
Vehicle battery,Vehicle charging system,Faulty Anti-Lock Brake System (ABS) Module,Faulty Engine Control Module (ECM)
The Anti-Lock Brake System (ABS) Module monitors the Battery Voltage. The ABS Module sets the OBDII code it detects system voltage is above 17 volts.