coolhand {aka Craig}

...is it in the ECU box, i dont recall it being there last time I had the ECU out.
Reason: 16491 DTC.
Bentleys page 24-131 is useless.

Yippers®

That influences boost pressure regulation. What ECU do you have?

coolhand {aka Craig}

...I did notice the VAG sez: (G71/F96) signal too low. And the CEL did fire after the 2nd warm run like it should. Ill check F96...unless, of course, someone beats me to it!!

17951 / 16506 / 16491 / 17593 all 35-10 Intermittant. (bix thx to Mike at chicago GTG for helping with the VAG last nite!!)

Yippers®

Maybe dbl check that the ECU is fully plugged in (both harnesses) and that you have run a good TBA post checking the plugs. That 'list' reads like a wiring problem more than that the O2 sensor, TB and Baro sensor all decided to crap at once .....

coolhand {aka Craig}

I did recently unplug the ECU (to test crank the starter with no belt load on the motor) and Im sure I plugged it in securely, but ill also check again, because xxit happens. I also cleaned out the Throttle Body which hasnt been cleaned for 100K miles!! I also unplugged alot of sensors around that area. That was probably 3-4 weeks ago. Almost too long??
Also, found info in bentley, that sensor is in the same place as the MAP (well, i hope so, it only shows ATW motor code!!)
BTW - Thanks Yips!!!

Yippers®

IIRC the BARO sensor is located in the plastic ECU case. Look at Bentley's page 24-2 item number 4:
Electronics box (E-box) with:
Motronic Engine Control Module (ECM) -J220-
Barometric Pressure (BARO) sensor -F96-

Vic995

there will be a difference with the windows completely close versus open, if you moving 60+mph.

The ECU box has an open passage to the passenger compartment, but is completely sealed under the hood.

I have a spare Baro sensor, email me if anyone is intested.

Vic, 99.5 1.8T APR Stg 1 FWD