× 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: Toyota catalytic converter diagnosis
Posted to Technical Discussion Forum on 10/11/2007

on the scan tool, select the pid for o2 sensor fuel trim, then watch which one is supplying the fuel trim information.

Robert Login to read more.