A motor control device includes an energization control unit and an excessive return determination unit. The energization control unit controls energization to a motor. The excessive return determination unit determines whether or not there is a possibility of an excessive return exceeding an allowable return position, when a non-energization return control is performed to return a motor in a direction away from a movable limit position by an external force generated in the rotation transmission system by turning off the energization to the motor after driving the motor to the movable limit position where the drive is restricted by the drive limiting portion. When it is determined that there is no possibility of the excessive return, the energization is continuously turned off, and when it is determined that there is a possibility of the excessive return, a stop control configured to stop the motor by energizing is performed.