Where is the first place to look to get this damn code gone? its been bugging me for awhile but haven't had time to mess with it and I have no clue where to start. Also I have an oil leak somewhere because when I shut my truck off after driving a short while it smokes from under the hood which I also need to look into.
Let me know if you have any idea where to start.
thanks

 

I had the same thing but mine was Bank 2 PO174 Lean Burn. Supposed to be a dirty MAF sensor. I think mine may have been because I put some B12 Chemtool in the tank on the last fill up to clean the injectors. Been doing that with all my cars for years periodically without the light coming on. Not sure if that's the cause though. I went to Advance and borrowed their code checker and got it cleared up. Hasn't come on yet. It's only been a day or so though so we'll see.

 

I did the same thing with our code reader but mine came back on so i guess ill clean the MAF and look into it some more.. thanks! Let me know if you find out anything else

 

Could be a vacuum leak.

 

Ok so I hooked the scanner back up and now its saying bank 1 is fine but bank 2 is lean.. WTF? Any idea on this one?

 

It has to do with the vacuum hose I am 90% sure. Mine had this problem a couple weeks ago and i ended up taking it to a shop for them to fix it. Just didn't really have time to do it myself. The vacuum hose had dry rotted out.

 

yep same thing happened to mine. VERY dry rotted. 7 dollar fix i did myself....

 

Where exactly is this vacuum hose located?