I had that same pesky code that doesnt apply to the dodge once again..P2000on OBD elm ..no other code....but the 3 key turn was p0432. Cat an 02 readings off...I had the simple p0455 emission code yesterday but adjusting the gas cap an reset an it didnt return ..only this p0432 now.
Note: i did a lot of city stop an go before it set..

Does 02 factor that cat error an which 02 on the test should i monitor .bank2 sensor 1 readings..
Do they all need to read under .10% an equally changing as in idle /test..
Any other tests ?

i really hate to think ill need a new cat..

Im also still stumped at why these elms give that crazy p2000 code .NOx trap ..[ deisels maybe use it]

 

That one is talking about cat efficiency. So, look at bank 2, sensor one, BEFORE you clear codes, and see what it is doing. Should bounce between just above zero, and 1 volt. Sensor 2 won't do much till the cat actually warms up. So, likely fixed for a while, then bouncing in a MUCH smaller range than sensor 1. Compare short, and long term fuel trims for bank 1, and bank 2 as well.

 

Ok..i went 80 miles after a reset ..no code ..

Note- as testing ,this seems like a regular reading an is always at that,but the short term fuel trim for B1S2. An B2S2 both remain at 99.2 the entire time..Is that normal?

.
The other readings stayed under 10% an evenly changing though..

Ill retest again..as you said

 

You can ignore fuel trim readings for the sensor two fellers. THey monitor the cat, and have very little, if any, effect on fuel mixture.