Hi, this is my first post as I am a new member. I have a 2005 Jetta Tdi that is going into limp mode. It is throwing code 16683. I have spent a lot of time reading about all of the possible causes. So far things look pretty good under the hood with the exception of the hose going to the EGR. It seems this could be a possible leak point. Has anyone replaced this hose and solved a limp mode problem?