13 Jetta engine fault code shows' exhaust gas catalytic purifier system, cylinder bank 1 too low'. What is the reason?

13 faw-Volkswagen Jetta engine fault code display exhaust catalytic purifier system, cylinder bank 1 function is too low. This situation is caused by excessive carbon deposition in the throttle of the vehicle. It is necessary to thoroughly clean the accelerator of the vehicle, which can eliminate this problem. The specific operation steps of cleaning the vehicle throttle are as follows:

First, remove the air filter of FAW-Volkswagen Jetta.

2. After the air filter of FAW-Volkswagen Jetta was removed, the throttle door of FAW-Volkswagen Jetta was exposed, and the throttle door was closed at this time.

3. Insert the wrench into the door of FAW-Volkswagen Jetta solar terms and push the door open.

4. Spray the accelerator cleaner into the accelerator of FAW-Volkswagen Jetta and brush it back and forth with a toothbrush.

5. After cleaning, wipe the inside with a paper towel.

6. Replace the air inlet of FAW-Volkswagen Jetta air filter to its original position, and the operation is completed.