What is the situation when the EPC light comes on and then goes off after restarting?

[VonMicah]

epc light comes on and then goes off after restarting is a normal phenomenon. The fault light comes on after the ignition switch is turned on, but the system has no fault after the car is started, and the light will go off. In the EPC system, the previous throttle cable is canceled and replaced by a sensor of the pedal device. The engine control unit calculates the optimal target throttle opening based on the position data fed back by the pedal device sensor and sends a signal to the throttle drive motor to rotate the throttle to this angle. Precautions for using the EPC system: 1. This method is better than the cable-type acceleration control, because the electronic throttle calculates and analyzes the input signal from the accelerator pedal position to know the engine's power demand and converts this information into the engine's torque through various actuators. 2. Due to safety and fuel consumption reasons, when the engine speed needs to be adjusted, the engine control unit can adjust the throttle position without passing through the accelerator pedal. The advantage of this structure is that the control unit can limit the throttle position according to various needs.