Check Engine P2279 Intake Air System Leak-? on 2014 Volkswagen Jetta

What is your question?

While driving, my car runs normally. At a stop, my rpm' go from 1 to 2 continuously. I already replaced the valve diaphragm but it did not change. What could it be?

What makes this problem better or worse?

At a stop, it is worse.

How long has your 2014 Volkswagen Jetta had this problem?

1 week