are you certain that there is a crank case pressure sensor installed on the engine?  I've -never- seen or heard of such a thing.   You could always install a mechanical test gauge and monitor it that way.

The oil catch can stuff can benefit with older cars but end up hurting newer cars. Unless you have a standalone aftermarket ECU then your stock one will be expecting a certain amount of crankcase pressure and adjust fuel trim and EGR feed as necessary to hit the factory set emissions/performance reqs. For how new your car is I would say it is best of leave it stock and let the warranty take care of anything that goes wrong. Buy a weekend toy car to tinker around with aftermarket stuff.