What is the reason why epc light keeps on?

The main reasons why the automobile EPC fault light is on are: 1. The EPC fault light is always on to represent the engine management system, or the electronic control fault is often accompanied by unstable idle speed of the vehicle or engine cold start jitter. However, for domestic car owners, it is generally because of the quality of domestic oil products and the dirty environment in the car that they drive to the maintenance service station as soon as possible for maintenance. In general, the throttle can be cleaned. 2. When the ignition switch is turned on for function check, the indicator EPC will light up. If this indicator lights up while driving, it means that the engine power electronic control system is out of order. The engine must be checked immediately. Under normal circumstances, dirty throttle body, vacuum leakage of intake system, broken brake switch and failure to upgrade engine in time may all lead to EPC failure. 3. When the EPC light is on, there are two possibilities. First, the throttle should be cleaned when it is dirty. In another case, the brake lights don't work. Replace the light bulb or check the brake switch and wiring. Also, due to the oil problem, the EPC fault light will also light up.