I had my check engine light pop on a couple days ago, so I had it checked out a PO432 code popped up dealing with the converter. So i asked someone with a scan tool to help me test out my system. Come to find out Bank 2 was letting to much stuff pass through, and Bank 1 was also letting stuff pass but not as bad. So I know I will need to change out the Y pipe catalytic converter. My question is how can help to save my O2 sensors when I take them out?

 

How many miles on them? Might be well served to replace them while you are at it, as oxygen sensors have a finite lifespan of between 100k and 150k, depending on the efficiency of the engine. Look for NTK if you replace them as they are the OEM supplier to Jeep.