I may have forgot to mention...I got the front driver tire fixed (had the sensor replaced, and have had not trouble since). Shortly after, the passenger rear sensor started going in and out, reading two dashes when it wasn't working, and reading correctly when it was working. On my return trip home after having the sensor replaced in rear passenger tire, the two dashes displayed once again, but only for a couple of minutes. To complicate matters, one other tire (passenger front) did the same thing a while back, but only for two minutes, and then never again.So when you are saying the tire has a problem, is it showing a lower pressure number on the dash, or does it just show double dashes where the tire should be showing pressure? Also curious is that in your first post you reported front driver side, and now you mention right rear. Did the problem tire get moved in a tire rotation?
Problems in this order: Front driver tire: two dashes, on and off. Front driver tire sensor replaced and no more issues (fixed a few weeks ago).
Rear passenger tire: two dashes on and off. Read correct pressure when working. (once, when rear sensor was displaying two dashes, front passenger tire did the same thing for about two minutes, but then read correctly, and never gave another problem). Rear tire came and went, and I got this one fixed today. On the return trip home, saw two dashes for about two minutes, and then all was good. I haven't had time to see if this is a one time thing ( I arrived home and the pressure was reading correctly). I will monitor to see if this problem will continue to come and go (if it does, I'll have the sensor looked at again).
My apologies for not being more clear and through on what the issues were regarding sensor failure.