C0306 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C0306 – Transfer Case Motor


C0306 Possible Symptoms


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


C0306 Possible Causes


Faulty Transfer Case Motor,Transfer Case Motor harness is open or shorted,Transfer Case Motor circuit poor electrical connection


C0306 Description


The transfer case motor is a bi-directional, permanent magnet, D.C. motor. When energized, through motor control A or motor control B, the ground is provided by the opposing motor control circuit and then grounded through the transfer case shift control module ground circuit, the motor, through a series of gears, rotates a shaft which moves the mode and range forks to shift the transfer case between the following ranges: – 4HI – The AUTO or the Adapt mode – 2HI – N – 4LO This DTC detects an open, short to voltage, or short to ground in the motor control A or motor control B circuits, or an open, or short to ground inside the motor.