× 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: EGR code PO 401
Posted to Technical Discussion Forum on 1/14/2008

William check to see if you got the whole port cleaned out i remove the throttle body the port is usually plugged solid right were it goes into intake i bought a flexible drill bit just for 3.1 3.4 works really well. good luck Login to read more.