A Diagnostic Trouble Code error number does not identify a broken part to be replaced but identifies a symptom that may be caused by any number of failed components or adjustments to be differentiated amongst by execution of a BMW Test PlanŠ guide through the fault tree.
A Brush-Less Direct Current - BLDC - motor is plenty complicated by itself. It is commanded by Pulse Width Modulated PWM signal from the ECU.
I suggest taking it to the authorized BMW Service Center.
Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness. (The Works of George Santayana p. 65)
Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.