How to repair the fault of BMW 320i electronic throttle?

This kind of problem should be checked at the maintenance station, because the fault indicator light is on, so it is mostly a circuit problem, and this kind of problem generally does not occur in machinery. When you go to the maintenance station, read the fault code with the car repair instrument, find out the specific fault problem, and then carry out further maintenance, which will save trouble. Don't tinker, say this is bad and that is bad. It may end up with poor connector or line contact.