maybe this will help. In my 2010 the check engine lite came on and I had no power. The dealer could find nothing so he called the factory hot line. After they asked a few questions the referred him to a specific wiring harness that was routed wrong at the factory, rubbed and wore the insulation off which shorted so the turbo was not working correctly.My jetta tdi will not run past 2000 rpm's i have changed the fuel pump, turbo, cleaned intake, maf, and all hoses. It is at VW dealer and they don't know. can anyone help?