20 12 Passat EPC lights go out as soon as they are on. What's the problem?

The EPC indicator light indicates that when the car is about to start running. The on-board computer board will test the wiring of the whole body first! If there is no problem in the detection process. After the car started. The EPC indicator light will go out after a few flashes. If the EPC indicator light stays on, the car will stall. Generally speaking, there are several possibilities for this problem. First, the throttle is dirty. The air chamber needs to be replaced. Clean the throttle. Second, the brake light switch and brake light bulb are faulty. Need to be checked and replaced. Third, there are problems with gasoline quality and fuel pump pressure. This series of problems will also appear on the four-engine blacksmith line.