I have the same problem with the Check Engine Light. The problem started over a month ago. The car has been in the shop over 5 times since. The VW service shop has not been able to find the problem. At first they thought it to be a heat sensor issue. They replace it, and the light went away for few days but now it is back on. The VW service can not figure it out. By the way, I am in Germany. I work for the US Army in Europe. So, if the Germans can't fix it, I am really in trouble. I hope that someone out there have an idea about what this CEL problem is all about.