I have no idea what the P1 value 32, "Auxiliary fan not available" means. I assume that you still have one, as you really can't have an air-conditioned car without that, but perhaps it means that N22 no longer controls it.

As for engaging the blower, I also can't set the temperatures with the climate control turned off.

It doesn't sound like you're missing anything, but the flashing left-side display sounds odd. Since this started with a version code, perhaps that's the only problem here. Note that the instructions that you copied, saying to add 16, assumes that 16 was not previousely added. You need to break the number down into binary to see if 16 is present.

As for the high-side pressure, what's the vent temperature? If you're getting close to 40F at the left-side center vent (with the temperature setting below the actual inside temperature), you're fine. Unless the system is under load, you won't see high pressures. This assumes that your auxiliary fan works. If not, your high-side pressure will spike.