O2 sensor help

I have a 2010 DCLB with the 4.0L at the start of the summer the o2 sensor (bank 2 sensor 2) went out and replaced with a denso. This solved the issue for a few weeks until the check engine light came on for the catalytic converters. I had both both upstream catalytic converters replaced then the original code for the bank 2 sensor 2 o2 sensor keeps coming on and burning out the o2 sensors (no more continuity) I have been through 4 o2 sensors since May. I took the truck back to the shop and had them check the circuit and they were able to find zero issues with the circuit that the o2 sensors are on. I am wondering if anyone has ever had any similar issues ??

 

Are you positive it's your sensors burning out? Have you tried swapping the driver and passenger o2 sensors to see if the problem shifts to bank 1?

-J