If I'm not mistaken, I believe the bank 2 is on the passenger side (U.S. models) of the car. You could have a cracked catalytic converter causing this. There is a recall on these models for broken cats and if they find them cracked at the welds, they'll replace them free of charge. Problem is that if your car does not fall into the correct VIN range, even if they are cracked, they will NOT replace them. The likelyhood that you have 2 O2 sensors going bad at the same time on the same side is nil. It tells me there's something going on before the exhaust gets there. It could be bad coil packs or plugs, wires but who knows? You're getting random misfire code P0300 but no specific codes for 4, 5, or 6 cylinder.

As for the wiper motor fuse, check to make sure that it isn't underfused from the reference on the inside of the lid. Whatever you do, do not overfuse it. You may have a bad wiper motor.