× 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: P0401 - EGR flow insufficent
Posted to Technical Discussion Forum on 8/7/2010 1 Reply

Rob,

We have fixed several of these vehicles for the same problem. The EGR passages in the throttle body get clogged up with carbon. Remove the throttle body assembly and soak the ports and on the last one we had to use a drill bit to get thru the carbon. I ... Login to read more.

1 Replies Received (View Replies)