What about Audi A6LEPC fault?

The main causes of EPC fault lights on Audi A6L are as follows: 1. The EPC fault light is always on, indicating that there is a fault in the engine management system or electronic control, which is often accompanied by unstable idle speed of the vehicle or engine cold start jitter. But for domestic car owners, it is generally caused by domestic oil quality and dirty environment inside the car. Drive to the maintenance station as soon as possible for maintenance. Generally, cleaning the throttle can solve the problem.

2. When the ignition switch is turned on for function check, the indicator EPC will light up. If the indicator lights up while driving, it means that the engine power electronic control system is out of order. The engine must be checked immediately. Generally, dirty throttle body, vacuum leakage of intake system, broken brake switch and failure of engine upgrade may all lead to EPC failure. 3.3 There are two possibilities. EPC light is on. First of all, the throttle is dirty and needs cleaning. In another case, the brake lights don't work. Replace the light bulb or check the brake switch and wiring. Because of the oil problem, the EPC fault light will also light up. The above problems can be solved in the following ways: 1. Troubleshoot the air intake system, select qualified fuel, clean the throttle body, etc. 2. Remove carbon deposits on related parts and clean them. 3. Rewrite the relevant data of ECU (this is a situation that cannot be ruled out after other faults are solved). 4. Do not rule out the possibility caused by other faults, and then carry out maintenance according to the test results of real vehicles.