What is the reason why epc fault light is on when Tiguan car is driving?

What is the reason why epc fault light is on when Tiguan car is driving? What is the reason why epc fault light is on when Tiguan car is driving? If we encounter this engine fault light, first confirm whether there is a problem with the sensor and eliminate the problem with the sensor. Most of the reason is carbon deposition. It is normal for cars to have carbon deposits, so it needs to be cleaned regularly to better protect cars and prolong the service life of engines. Volkswagen Tiguan epc fault light is on for the following reasons: 1. This is due to the problem of the driving computer system. 2. It may be caused by unclean engine throttle. 3. There is also a leak in the air intake system, which causes the engine control unit to light the EPC warning light after detecting the problem. 4.EPC fault light is always on, indicating that the engine management system or electronic control is out of order, which is often accompanied by the phenomenon of unstable idle speed of the vehicle or engine jitter during cold start. But for domestic car owners, it is generally caused by domestic oil quality and dirty environment in the car. Drive to the maintenance service station as soon as possible for maintenance, and generally clean the throttle. 5. When the ignition switch is turned on for function check, the indicator light EPC will light up. If the indicator lights up while driving, it indicates that the engine power electronic control system is out of order. @20 19