What is the fault of EPC yellow light on Shanghai Volkswagen polo instrument?

Dirty throttle or faulty brake switch and wiring.

Explain in detail:

Volkswagen Santana dashboard EPC = electronic power control (full name of engine electronic stability system), many people also call it electronic throttle.

EPC indicator lights are more common in the public.

After the key door is opened, the vehicle starts self-inspection, and the EPC indicator light will light up for a few seconds and then go out.

If the vehicle does not go out after starting, it means that the mechanical and electronic system of the vehicle has failed.

Generally speaking, there may be two kinds of faults when EPC light is on. First, the throttle is dirty and needs cleaning. In another case, the brake light is not on, so it is necessary to check the brake switch and wiring.

The EPC light is not a serious problem. Even if the EPC is completely damaged, only the engine speed will not be adjusted. The engine will idle at the speed of 1500 rpm to ensure that it can travel to the maintenance station for maintenance.

Also, due to the oil problem, the EPC fault light will also light up.