A motor control device includes a detector, a phase determiner, a controller, and an outputter. The detector detects a drive current. The phase determiner determines a rotation phase of a rotator based on the detected drive current. The controller is configured to perform control in a first mode for controlling the drive current based on a torque current component and in a second mode for controlling the drive current based on a current having a predetermined magnitude. The outputter outputs a signal indicating a value of the excitation current component of the drive current is equal to or smaller than a threshold value when the value of the detected drive current is equal to or smaller than the threshold value in a condition that the second mode is executed and a value corresponding to the rotating speed of the rotator is larger than a predetermined value.