What is the fault of epc lamp and how to solve it?

EPC lights are common in Volkswagen models. When the vehicle starts self-inspection, the EPC light will light up for a few seconds and then go out. However, when there is a fault, this light will light up to remind the owner that there is a problem to be solved. Generally speaking, there are several possibilities for EPC lights to light up. First of all, maybe the throttle is dirty and needs cleaning. Then, in some cases, the brake light will not light up, so check the brake switch and wiring. Another possibility is that there is something wrong with the oil, and the EPC fault light will also light up. If the battery is low, the EPC fault light will also light up. If you are not sure why, you'd better go to the 4s shop for inspection and maintenance. But in some cases, we can also solve it ourselves. When the battery is low, the quick solution is to use other vehicles to charge the vehicle. The fundamental solution is to replace the battery. However, during maintenance, the problems should be eliminated one by one in order, and do not operate blindly. To solve EPC lamp fault, it is necessary to analyze the specific situation. Generally speaking, EPC light is on because of air intake system failure, such as air leakage or blockage; The throttle body is dirty and has too much carbon deposit; Improper fuel selection and other reasons lead to abnormal cylinder pressure, valve failure, stuck or carbon deposition, ECU failure. Different problems have different solutions. Troubleshoot the air intake system, select standard fuel, clean the throttle body and remove carbon deposits on related parts. Rewriting ECU related data is also an effective solution. If the EPC indicator light is found to be on, the owner can first try to turn off the engine and restart it to determine whether the EPC indicator light is still on. If it goes out, it means there is no substantive problem, but the EPC light is lit by some influence. If the light is still on, or often on, then the previous solution must be taken to solve the problem.