So randomly my check engine light came on this morning. I was expecting to find something simple, and it appears to be quite the opposite. Just looking for some direction if anyone has ran across this themselves. Vag-com yields the following engine codes.

6 Faults Found:
17951 - Angle Sensor 1 for Throttle Actuator (G187)
P1543 - 002 - Signal too Small - Intermittent
17580 - Angle Sensor 2 for Throttle Actuator (G188) Signal too Low
P1172 - 002 - - Intermittent
16497 - Intake Air Temp. Sensor (G42)
P0113 - 002 - - Intermittent
17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
P1297 - 001 -
17519 - Oxygen (Lambda) Sensor Regulation: Bank 1
P1111 - 002 - System too Lean
17544 - Fuel Trim: Bank 1 (Add)
P1136 - 001 - System too Lean - MIL ON
Readiness: 0000 0000


Thanks a bunch for any advice given. This is on a 2004 A4 1.8T 6 speed manual USP. The car is stock aside from the clutch I put in about 8 months ago. Car still runs fine, I cleared the codes and took it for a 10 minute drive and they did not return, but it seems I'm only boosting 9 now instead of my normal 11. For the record, it has been *** cold here in Colorado for the past 5+ days, like in the single digits and below zero. I pulled it into the garage and plan on pulling the pipe from the air cleaner and inserting my home made adapter to charge the boost system with air to check for leaks as soon as **** thaws out a little. Thanks again.