What are the reasons for BMW EPS communication failure?

[Gerald]

BMW EPS communication failure may have the following reasons: Dirty throttle body: When accelerating, you may feel the throttle sticking, heavy, and the car accelerating slowly. When pressing the throttle at idle, the RPM rises slowly with a dull response. When releasing the throttle while driving, the car's speed drops immediately. It can also directly affect the precision and smoothness of engine air intake. Damaged throttle electronic control unit: This is a mechanical failure. The resistor part of the potentiometer is made by spraying a carbon film on a polyester substrate, which is actually a low-level manufacturing process with poor wear resistance. Sensor malfunction: The sensor may suddenly fail during measurement, showing a constant value. When this fault occurs, it can cause a series of unpredictable problems, making the control system unable to function properly for a long time.