202 1 Volkswagen sagitar alarm EPC, is there a big problem at high speed?

202 1 Volkswagen sagitar alarm EPC has little problem at high speed. EPC is the full name of engine electronic stability system, and it is also called electronic throttle by many people. Generally speaking, there are two possibilities for EPC lights to turn on. First of all, 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. Because of the oil problem, the EPC fault light will also light up.

Matters needing attention

The system consists of some sensors, controllers and other components. When the sensor fails or senses an abnormal situation, the control system will take corresponding measures according to the set program. When we accelerated, the control unit sensed that the throttle valve was opened. At this time, due to the failure of the brake light switch itself, the control unit receives the brake signal from the brake light switch. According to the program, the control unit will reduce the fuel injection time and reduce the power output of the engine.

When the control unit can't accurately judge the cause of the fault, it will light the EPC lamp to give an alarm and prompt the user to check. From this point of view, EPC lights are somewhat similar to the common fault warning lights or engine inspection lights of American cars. EPC indicator light is very common among 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.