2001.5 A4 1.8T B5 Platform 147,000 Miles. New to this forum.
I love my Audi but more recently I have not been able to correct a DTC that everyone is aware of 17536 Mult System too lean. I am a VAG-COM user. I get a minor hesitation when coasting.
* I've replaced many of the vacuum lines with silicone hose but based on many difficult to find lines I could possibly still have a leak.
* The fuel filter has never been changed to my knowledge. I purchased the vehicle at 75,000.
* I pulled the MAF and visually it looks fine but, and hear is where I'm stupid, there are post sticking out of the side of the MAF sensor and a diagram that indicates that a wire element could be placed there. There is no wire element in place and I'm not sure if this MAF works with a reed type sensor or the element.
* VAG Results
Air Mass IN at Idle 3.92 - 4.11 at 4,000rpm 14 at 2nd gear redline 45 g/s
S1 -3.0% Pre heat turns on and off.
S2 24.2% Pre heat remains on.
CAT Temp 430.0 C