catalyst efficiency low bank 1?

in my 99 ram 2500 v8 5.9 that code came up, not sure what to do about it or what it could be any ideas or help with be great thanks

The question was for bank 1 and the code is for bank2.Toadyboy is correct.Follow his lead.

In after Robert M phaggotry. Oh, like that first poster said, be sure there aren't other faults causing the rear O2 sensor to pick up all that O2 in the exhaust...such as a rich-running engine.

Catalyst Efficiency Low Bank 1

This Site Might Help You. RE: catalyst efficiency low bank 1? in my 99 ram 2500 v8 5.9 that code came up, not sure what to do about it or what it could be any ideas or help with be great thanks

DTC P0430 Catalyst System Low Efficiency Bank 2 Circuit Description In order to maintain a reasonably low emissions of Hydrocarbons (HC), Carbon Monoxide (CO), and Oxides of Nitrogen (NOx), the engine controls system uses a three-way catalytic converter. The catalyst within the converter promotes a chemical reaction which oxidizes the HC and CO present in the exhaust gas. This reaction converts them into harmless water vapor and Carbon Dioxide. The catalyst also reduces NOx, converting it to Nitrogen.