PlasticMac
Member
Andy,I don't know but the evidence points that way.
An initial peruse of forum posts including G294 over the years are all from FSI owners.
The wiring diagram shows you posted is identified as No 41/6, the start of section 41 clearly identifies it as relevant to the BAD engine code - For Model year 2004 and the only other place G294 pops up is section 3 which is the same for Model year 2003, at least in my copy of the wiring diagram.
Andy
I think the NOx sensor connection is coincidental.Two of the three G294 wires, (a & b), are the 5 Volt supply and Grnd for the G294, and also for several other sensor, including the NOx sensor. These sensors are active sensor ("electronic"), rather than simple resistive sensors.
So,( if it actually exists), the G294 is measuring a pressure, that the ECU uses, (or not).
The mystery is where, on an FSI, it is fitted, and what it does.
Mac.