my car is throwing the following check engine codes: P1101, P1106, P0171 and P0174. (Bank1 bank2)? Maybe someone can shed some l light on exactly what needs to be replaced. I am under the impression the car is running lean and may need some sensors. Thank you
-Steve

 

could be MAF or O2 sensor(s). Clear the codes, drive around a while and see which ones come back

 

2 banks- im assuming this is a 2.8 although you didnt give us any info at all about the car so its going to be very hard to give you any feedback.

 

yeah sorry about that its a 2.8 quattro.. i had a feeling its an o2 sensor and maybe a mass airflow sensor. Its been driving like **** (does not have the pull that it normally has) car has been tuned up recently. Also when the car is shifted to around 3 1/2 4 grand it will shake rumble as it is shifted into the next gear( sometimes if i rev hard out of a 1st, 2nd it feels like its being restricted, loses all power. I am not sure if it is the clutch or a lack of fuel consumption. I have dealt with vw's my whole life and am not used to the all wheel drive set up yet. Any ideas on what may be causing these issues is much appreciated

 

I have a 01 1.8t 5 speed and my code of p0171b just came up. I'm not sure why it came up as bank 2 because its a 4 cly. Any help on this one guys? Is it safe to drive? How much would it be to fix, and where is this part that might be broken located? Its my first audi and this is the ONLY issue i've had.

 

Steven this happened to my 1.8t and it was a clogged cat. Quick way to find out is to take her for a 10-15 min drive at night and check the cat and exhaust manifold, if its glowing red hot that might be your problem.