Yes I figured thats why they put the P there also but then going looking for a fuse in that packaging (1210 / 3225) doesn't exist.
The inductor i found matches the physical dimensions and footprint. Given that, it would also serve as a fuse because it's current limiting properties being so small at less than 1 Amp.
My Assumption: Pioneer has used P as their designator to cover for a fusible RFI filtering component and maybe called it Protector.