What does the car epc light mean?

The car epc light is on because the mechanical and electronic systems are out of order.

The automobile dashboard shows EPC, indicating that the mechanical and electronic system of the vehicle has failed. There are two common reasons: the throttle valve is dirty to be cleaned, the brake light is not on, and the brake switch and wiring need to be checked.

Introduction of epc lamp:

When the ignition switch is turned on for function check, the indicator EPC usually lights up. If this indicator lights up while driving, it indicates that the engine power electronic control system is out of order. The engine must be checked immediately. The throttle valve body is dirty, the air intake system leaks vacuum, the brake switch is damaged, and the engine is not upgraded in time. EPC failure may occur.

EPC stands for ElectronicPowerControl in English, full name of engine electronic stability system, also called 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.

In EPC system, the former accelerator cable is replaced by the sensor of pedal device, and the engine control unit (ECU) calculates the optimal target accelerator opening according to the position data fed back by the sensor of pedal device, and sends a signal to the accelerator drive motor to make the accelerator rotate to this angle.