My old Volvo had the oil pressure sender inside the timing case. A small leak from it was responsible for a couple of timing belts getting eaten before a mechanic noticed it and fixed it while in there for the timing belt. Sounds like Nissan has it pretty well figured out.
Yeah... you couldn’t pay me to take a Nissan four banger (they’re hit-or-miss and not that great until recently) but their sixes are hard to beat.