What is the function of the EPC in a car?

[DelCody]

EPC stands for Electronic Power Control, which is referred to as the throttle fault light in Volkswagen models. In fact, if you pay attention to the dashboard, you will notice the EPC light illuminates every time you start the vehicle, but it usually turns off shortly after. This is the vehicle performing a self-check, and if no issues are detected, the light will go off. If it remains lit, it indicates a problem. Below are the reasons why the EPC light may stay on: 1. If the EPC light remains lit, it means there is a fault in the vehicle's mechanical or electronic system. Generally, there are two possibilities: one is a dirty throttle body that needs cleaning, and the other is a malfunctioning brake light, requiring inspection of the brake switch and wiring. It's important to note that poor fuel quality can also cause the EPC light to illuminate. 2. If the EPC light suddenly comes on while driving, the issue is relatively more serious, indicating a fault in the engine's electronic power control system. The engine must be checked immediately. Common causes include a dirty throttle valve body, vacuum leaks in the intake system, a faulty brake switch, or the engine not being upgraded in time, all of which can lead to EPC faults.