I have seen the expected low pressure notification before on the summers when I had the flat. That warning has not gone away for the front right. This is now alternating with the full TMPS error (not wheel specific) and has been since I put the snows on after the flat in Nov.

I think my only reasonable next step is to have a shop swap out all the sensors for the 4 others that I have (noting the codes before!) and see what happens.