Update -
Forgot to mention before, this is a 98' Bonne with a 3800k engine.
I finally got my hands on an infrared thermometer and also figured out what I was doing wrong with checking the H02S wiring...didn't have the ignition on.
The temperature at pre-cat is roughly 330 and post-cat is roughly 450. Does anyone know what the "light-off" temperature for this cat. converter should be? (I've read that it can vary from 400 to 600 degrees) Unless the infrared thermometer that I borrowed isn't calibrated correctly, these temps seem rather low to me!
The reason I ask. With the ignition on, I'm getting the appropriate 400mv at both H02 sensors. I start it up and get the appropriate 100mv-900mv (fluctuating) voltage at both sensors. From what I've read, it'll do this until the cat. converter hits it's "light-off" temperature...before that temp, the converter doesn't really do much of anything so the post-cat sensor will mirror the pre-cat.
Unlike a lot of the forums that I've read where people had this same code pop up, my car is actually running a little rough. Idle isn't the greatest (and seems a little lower than usual) and it does seem down on power a little bit.
Any suggestions of what to try next, would be much appreciated!