ENGINE CODES

Do I have to replace everything these codes say or can this be caused by one sensor and is like a chain reaction.
The car runs/drives fine... with some vibration on idle its very annoying.... so where do I start...

P1141
P0300
P0301
P0303
P1606
P1127
P1129

I already replaced/cleaned;
PLUGS
COIL
IGNITION WIRING
CLEANED THE INJECTORS
FUEL FILTER

I have a 1999 A6 Quattro 2.8
so what now?

 

Im confused as ****.... I cant keep buying all this stuff there has to be an explaination.

any help guys!!

 

??? so i guess i have to start replacing everything?

 

Hi,

I do have the same problem with a 99 2.8 A6. The codes are P1129, P1127, P1141 and P0411. I am not quite sure where to start with the root cause analysis. I read it could be as simple as a leak in the air intake line. I also found out that the MAF and O2 sensor could be the reason. Let me know, how you fixed the problem. The rough instable idling is really annoying I want to get rid of it.