× 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: Cat efficiency code
Posted to Technical Discussion Forum on 12/27/2012

Why not scope or graph the o2 sensor voltages so you can see if the cat is in fact not doing its job? Login to read more.