× 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: WHY NO P0420
Posted to Technical Discussion Forum on 10/1/2012 1 Reply

heres my guess is that since the last time the cat monitor ran it hasn't met the requirements to run the test again Login to read more.

1 Replies Received (View Replies)