"pass" on first elective rotation

Where was this? Total dick move, in my opinion. Unless you did a really bad job, a 'pass' rather than 'honors' could actually hurt you. I'd 100% reach out to the PD and find out what happened.

Some schools only have pass or fail for seniors anyway. I would just move on and rock the rest of your rotations.

I received a HP on one of my aways, still ended up matching. I am not sure if it was actually on my transcript but I was never asked specifically about my grades and I was told on multiple interviews that my letters were good. At some places attendings are supposed to give out a certain amount of H, HP, P, etc I think that was the case at my away and that is why even though I got that grade I was still given a good letter. Hopefully that is the case for you all as well and it doesn't end up affecting your application negatively.

I am interested to find out the answer to this. I received a high pass at one of my rotations. Not sure what happened, but felt I worked very hard and was always very prepared.