so my engine light came on ... FOR THE BILLIONTH time. Got the code pulled. p0133- Oxygen sensor problem. Ok so i find out we have 2 of the damn things, each over 100 bucks ... how do i find out if its the front or rear sensor? Could that be the rpm problem ? oh ya .. Welcome to dumbass Ontario where i have to get it fixed in order to pass assrape emissions testing . Argg sorry guys .. just so frustrating that i have been sinking so much money into this car.