White Smoke & P0430

[TiberiusBoxster]

All,
I had my CIL come on last week. Checked the code and saw it could be the MAF sensor, O2 Sensors or Cat (P0430). I cleared the code and it returned, after the engine cycled. I bought some MAF cleaner and cleaned up the MAF on Sunday. Yesterday, I reset the code. This morning when I started the car I noticed some white smoke and could smell exhaust. I have smelled exhaust a couple of times before. This is the first time I remember seeing smoke. It was a little chillier this morning, than it has been. It was around 56*. I was curious if anyone had any thoughts about the code being related to the smoke.

I did some reading and white smoke usually means AOS. I plan on doing the shade tree test of pulling the oil filler and checking suction on it. The white smoke did clear up and I did not see it anymore. I will check and see if I see any more smoke when I drive it in around 1.5 hours.

Thanks for any and all help.