Audi bank 1 bank 2 mixture is too strong.

There are three reasons why the mixture of Audi bank 1 and bank 2 is too rich. The following is a detailed introduction:

1. Hard fault: The resistor part of potentiometer is formed by spraying a carbon film on polyester substrate, which is a low-grade preparation process with low wear resistance. The sliding contact consists of a row of opposing claws made of pure steel. The carbon film is not coated with protective agent, and the falling carbon powder leads to poor contact, which is inevitable. You can go to the 4s shop to apply carbon film potentiometer lubricant.

2. Soft fault: the throttle is too low most of the time. Air flows through the gap of the throttle at high speed, and the influence of accumulated dust on the airflow is beyond the adjustment ability of the throttle. You can go to the 4s shop to clean the throttle, which can reduce fuel consumption and make the engine flexible and powerful. Reduce the cylinder mixture.

3. Damage of high-pressure oil pump: It is reported that the mixture is too thick. This kind of fault is generally caused by the damage and oil leakage of high-pressure oil pump. You can go to the 4s shop to replace the high-pressure oil pump and check the oxygen sensor.