Audi a6l2, 808825 air intake system leaks.

1. First, check whether the car is in the computer with a diagnostic instrument. Is there a fault code? 2. Check the intake and throttle angles of group 03 of data flow, and the values of 30-33 groups of oxygen sensors. According to the experience, the exhaust valve of this car is broken, and it is easy to puncture the valve membrane. It is recommended to focus on checking the waste gas valve. If there is something wrong with your car, ask the car mechanic. 4S shop professional technician, 10 minutes to solve.