× 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: Catalytic converter monitoring on lexus
Posted to Technical Theory Forum on 8/30/2017 4 Replies

Being this is the TTF I will venture a guess:

The ECM has the capability to run the cat monitor one bank at a time. The ECM changes the FA ratio on a bank and watches the response of the single downstream O2 sensor. Login to read more.

4 Replies Received (View Replies)