PO170....with a twist

[rman]

yesterday i was sitting at a redlight and i noticed my idle start to bog down. Seconds later, my CEL came one

got to work and pulled the code, P0170. I know everyone that has had this says it's almost ALWAYS the MAF, but here's the twist

PO170 - Fuel Trim Bank 2

first off, which side is bank 2? The left (drivers) head looks to be closer to the front, but the right (pass) side injector seems to be closer.

Second off, what do you all suspect? If it were the MAF i'd think that it wouldn't be a specific bank, could this possibly be an o2 sensor?

I realize it could very well also be a leak in the intake, weak injector, etc, but i'm just trying to figure out why it's bank 2 and not both sides....

TIA
rman

[Mike51809]

Bank 2 doesnt mean left or right side of the motor, it sounds like it would but it doesnt lol because i got the same code too with banks one and 2 on my kompressor which is a straight 4 and it was the maf and ive had no more problems

[zmatt]

I'm not convinced it's the Maf. My car does this occasionally and i have a new MAF. I do have an intake and a wonky AFR which I think explains it. rman are you stock?

[vaspen]

zmatt are you getting a code for a o2 sensor for the one or 2 on the exauhst ? or coil pack or fuel pressure