I've taken it to the dealer. They stated it was ecm relay. Replaced and no resolve. Had a melted fuse on left side. Got rid of that, still popping up the same code. But the car runs and drives fine. Confused
It's a 2008 touareg 3.6 base model. I've reset the computer several times after making repairs. The only reoccurring code is a p0657. A open circuit. I've had a shop say that the fan might be the problem. After it gets up to 200 degrees. The fan(s) don't come on.