It is possible that the cat code is due to o2 sensor, but doubtful that just replacing the 1/1 sensor will resolve all your codes.
I would check the flange bolts between yon exhaust manifold and the down pipes first.
If p0135 code is 1/1 sensor, I'm pretty sure p0432 is bank 2 cat. So you likely need to look at the entire system (ie, more than just the 1/1 sensor, likely the 2/2 as well) one way or another, that is if you don't just have loose flanges. Good luck, I have some experience with this on my same year model as you, if you have any questions.
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