Originally Posted by exolution

DTC P1153 HO2S Insufficient Switching Bank 2 Sensor 1
DTC P1154 HO2S Transition Time Ratio Bank 2 Sensor 1

The only argument I have against the O2 sensor causing the problem is the fact that they've been out since I bought the car and it only recently developed this problem.

It could be the fuel filter because it could have been running rich and the fuel filter clogged up and caused my problem and now we see both problems. If it's passed due replacement I might as well change it and see what happens. The fuel is coming out of the cylinder 3 side, a cylinder that was running noticeably rich.