Hooked up my car to a genesis scan tool. Says, o2 sensor circuit low voltage bank 1 sensor 2.

06 lsj

I'm thinking the sensor on the cat?

 

Dammit somebody help me pleeeeeeeeeeeeese

 

Humm seems a bunch of SRT-4 guys and girl are having the same problem lol, you can try to replace your o2 sensor and see if that works, and one guy was stating something about the wiring which I am no tech so I cant go into specifics with you about it, but he did recommend the person to take it into the dealership to have read and see what to do. So you can either do that or just try replacing the o2 sensor and see what that does..... Also maybe clogged cat maybe...? just throwing out suggestions, if it were me I'd replace sensor, Good luck homie!