Cylinder Identification comes from the Camshaft Sensor. I know you changed it last month, but there's actually a TSB relating to incorrect installation. I'm guessing this is the hall effect type, and when you pulled it apart it was damaged inside. Something happens to these things where the hall effect vanes bend and break off the sensor pick-up, or vice-versa. The problem is that this thing is like a distributor, if you don't get it clocked exactly right when you install the new one, it will conflict with crankshaft readings. About the only way to know if it's right is to match the crank and cam sensor waveforms on a scope while adjusting the cam sensor. If you have access to a two-channel scope, and you let me know if you have a two pin or three pin cam sensor, I can send you the procedure. Otherwise, you're going to the dealership, or a good diagnostic shop. Sorry, bud.