Looking down past the orange dipstick there is a sensor with one prong (a little blury )it is on body of engine , low ,difficult to access.
spank in middle of picture .
that sensor was disconnected and wonder if that could be linked to loss of power , bad gas mileage , etc...
did not pull any code when disconnected.and terminal had that cracked rubber protector ( 2 nd photo )dangling next to sensor .
thanks