Island Boy::Jeproks

2 Faults Found:

17547 - Fuel Trim: Bank 2 (Add): System too rich
P 1139 -35 - 00--

17545 - Fuel Trim: Bank 1 (Add): System too rich
P1137 - 35 - 00--
Readiness: 0000 0000

I already replaced the Coolant Temp Sensor but codes came back. Logged block 32 via vagcom and came up with the following:

Adaptation (idle) bank 1 sensor 1 (-7.1%)

Adaptation (partial) bank 1 sensor 1 (-10.0%)

Adaptation (Idle) bank 2 sensor 1 (-7.4%)
(for this one, a little bubble popped up and said "range -25 to +25%, but -4% to +4% was proper)

Adaptation (partial) bank 2 sensor 1 (-10.0%)

Thanks in advance.

4Rings::G2 boosted::

since your current readings are only -7% @idle, it means at some point in the past they went past -20% and then corrected themselves. Drive the car while logging block 032 and see if you can get them to go down again. You could have a small vacuum leak, your MAF might be on it's way out or it could be one of the temp sensors, to name just a few possibilities.

Island Boy::Jeproks

Thanks Thomasz, I will do the logging later

Mat Indukts Lambos

since it's both banks, it'll have to do with both sides. So it won't be an O2 sensor, cat, spark plug, etc.

It could be MAF, boost leak, vacuum leak, ECTS. Got a boost gauge? Making proper boost? Vacuum test BPV's, look at the TBB, swap out the MAF with a known good one if you have a friend, and drive a little, see if your 032 values change. IMO -7 @ idle, and -10 at part load are going to be indicative of a bad MAF or boost leak. Good to see both sides are even, and fairly close together though.