× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Vag VCDS and Pid Definition / P0420 VW
Posted to Technical Discussion Forum on 2/16/2012

I have seen this code set on various Audi and VW vehicles and think it is due to the engine not getting up to temp on multiple trips, I think Audi did some program updating to take care of this but I am not sure about VW. I would ask Customer more about there ... Login to read more.