What is the function of epc fault light?

The EPC fault light is always on, indicating that there is a fault in the engine management system or electronic control, which is often accompanied by unstable idle speed of the vehicle or engine jitter during cold start. EPC, also known as electronic power control, is called engine electronic power control system, and many people also call it electronic throttle. 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. The possible failure sources of the general contracting light are: First, the brake light is broken. When the brake light of our vehicle is not on, EPC will appear as a fault light. Second, the throttle fails. If there is a problem with the throttle or engine wiring, EPC will also light up. Third, the brake switch is damaged. If the brake switch is worn too much, EPC will also appear. The fourth is that the clutch switch is broken. For the same reason as the brake switch, if the clutch switch is off, EPC will appear.