So got the P2015 code today on my 2011 with 104K miles. The car is running fine and there is no oil consumption. After I bit of research I found the VW extended warranty on the intake manifold and I still qualify. I have an appointment for Wednesday and have a couple of questions. I am assuming (hoping?) the P2015 is covered under the warranty, but are there any other things I need to worry about? Is there something else they will try and sell me? I am thinking this should be the time to clean the carbon deposits. I asked about this and with the warranty work they charge $375 for this. Does that sound about right? I called another VW dealer and they said in that situation they would charge $300 to clean the carbon deposits. At a dealership, what exactly is cleaned when cleaning carbon deposits? Cylinder head? Intake manifold (if not replaced)? Valves? Any other potential issues when cleaning the carbon deposits? If I do the carbon cleaning I was thinking of asking for pictures. I would really like to see the before and after.