Sensor leaking oil

I just noticed on my 2015 xmr 1000 that I have a small dribble or wet spot around a sensor that is on top of the crank case. On the passenger side where it says rotax on the case the sensor is located on the front top at about 2 o’clock and has one single bolt holding it down and the sensor is black. I’d like to remove it and see or clean it but don’t know what it is ? I would assume it’s just an o ring seal leaking and probably not worth taking it in. I think I may have blasted it with water when I cleaned everything before changing my oil. Has anyone tinkered with this sensor? Thanks