A three way catalyst converter manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. P0431 engine trouble code.Pervyj Check Point Ili P0431 Mitsubishi Outlander 2 4 L 2004 P0431 Mitsubishi Where Are The O2 Sensors On A 2001 Montero 2005 Mitsubishi Galant O2 Sensor Bank 1 Sensor 1 Location 2 4 Fixya You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features.P0431 mitsubishi. Mitsubishi montero 2001 obdii code p0431 changed all 4 o2 sensors generic bosh still get the same p0431 after resetting codes and 2 days of driving engine light comes back on also i get the code twice code 1 is p0431 and code 2 is p0431 what else can i do. Exhaust does not smell like rotten eggs and i dont think there is an ex. It is closely related to p0430 which is one of the most popular obdii codes. Meaning of p0431 engine trouble code is a kind of powertrain trouble code and…