What's with the epc light on? The body shook, and it was gone after the flameout.

The lighting of epc light means that there may be a fault in the electronic throttle system, which may affect the normal use of the vehicle. EPC is called engine electronic throttle system, commonly known as electronic throttle system. The system is mainly composed of engine control unit, engine wiring harness, throttle, accelerator pedal, brake switch and manual transmission clutch switch. The reasons why the EPC light is on are as follows: 1, there is too much carbon deposit in the throttle, and there is something wrong with the opening; 2. The engine misfires and the cylinder is missing, resulting in the throttle valve not working normally; 3. Air leaks behind the throttle valve, and the detection data of the intake pressure sensor is abnormal. These conditions will light the EPC lamp.