Volkswagen sagitar epc light is on, and the engine fault light is on.

EPC light, also known as the indicator light of electronic throttle control system, will light up in two situations for the public. In the first case, when the engine throttle control system or engine system fails, the indicator light will light up. There may be many kinds of faults, such as the opening of the throttle caused by too much carbon deposit, the abnormal operation of the throttle affected by engine fire and cylinder shortage, air leakage at the rear of the throttle, and abnormal inspection data of the intake pressure sensor. These conditions will basically cause the EPC light to light up. If it is an accident, it is recommended to stop the car and turn off the ignition switch. When the engine is restarted, the fault light will go out automatically. If it is a static fault, the fault light will not go out automatically. It is necessary to use a diagnostic computer to detect the engine fault code and replace the faulty parts according to the fault code. The second case is the early Volkswagen model. If the EPC light is on, it may be that the brake light switch of the vehicle is damaged, or the brake light bulb of the rear taillight of the vehicle is damaged. At this time, you can step on the brake pedal in the cab and find someone to observe whether the brake light at the back of the car is on. If only the high brake light is on, or the brake lights on both sides are basically off, first you need to check whether the brake light bulb is damaged. If the light bulb is replaced, the EPC light will go out automatically. If there is nothing wrong with the light bulb, the brake light at the back is basically off. It may be that the brake light switch is damaged and needs to be replaced and repaired in the repair shop.