Throwin a code

My 03 GT is throwing a check engine code that I can't figure out. My scan tool says this:

P0141
02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

I was getting this code with my factory exhaust and I am getting it still with new Catted Xpipe, catback, and 4 new 02 sensors.

Has anyone seen this or know what my issue may be?

Thanks in advance

Thanks... I'll look into that. Anyone have any other things i can look at while i'm under there?