× 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: P0420 diagnosis
Posted to Technical Theory Forum on 3/14/2010 4 Replies

[...trimmed text...]

What happens to a cat that causes it to quit converting enough to satisfy the ecm? I've read on here something about a wash that's supposed to make them function again. It'd be nice if that were poss... Login to read more.

4 Replies Received (View Replies)