× 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: Bad Cat no P0420 code
Posted to Technical Discussion Forum on 10/14/2008 1 Reply

[...trimmed text...]

Upstream or downstream?

[...trimmed text...]

That would be a dangerous assumption.

Login to read more.

1 Replies Received (View Replies)