I was clearing the codes out of my Camaro the other day (catalyst inefficiency) and was looking through some basic data logging. I noticed that the Bank 2 Sensor 1 O2 sensor's voltage was all over the place. Bank 1 Sensor 1 and 2 as well as Bank 2 Sensor 2 had steady voltage...can't remember off the top of my head.

Signs of a bad O2 sensor?

I'm learning as I'm going so this is probably an amateur question. Never really spent much tool time on a car...so I'm learning the ropes.