Unfortunately the sensors are no more available here than they are there, and people are waiting for the GM dealers to get parts so that their recall work can be completed.
My assumption about your "new" sensor is that it was bad when you got it, or failed when you sat on it. It would be great if there was another car near you that you could use to test the sensor. I do not know what shipping of the sensor would be to the USA, but I would be happy to test your sensor in my car.
I looked at airbag24 and did not see anything that looked like it would help in this case. They offered (for Opel GT) repair/replacement of the impact sensor and a bypass for an airbag or seat belt tensioner, but I did not see anything for the PPS. Of course I don't read German, and the translation is not absolute. Can you point me to their PPS replacement product?
As I posted, my (single-point) experience has been that the B0081 71 DTC will reset itself at the next power-up after a working sensor is installed, so no external reset should be required.
I am anxious to see the result from your Airbag360 device.
FYI: To use the @ to get someone's attention it has to be continuous with the name. You put a gap between it and my name, so I did not get a notification.
Sky NA 2007 Midnight Blue
Sky RL 2008 Carbon Flash - Naked