Oil Leak

[marcg83]

Looks like I have an oil leak. 2000 with a 2.4l. I included a pic of the peice because I don't know what it is. It is coming from the left side cam housing(looking from drivers side) and has a white connector plug and wire coming from that. It is located just above the water outlet. It seems to be leaking down the side of the engine towards the back. Can anyone help me out as to what this peice is so I can get another and replace it or know how much it will cost through a mechanic.
Thanks for your help.

[guiguilandry]

this is the oil pressure switch, the part itself cost lie 10 $... I replaced mine last week it was destroyed and in a minute I lost 2l of oil.... so change it fast.. and no need to go to a mechanic at all just get a deepsocket of the right size... 1in1/16 IIRC and you have to remove the IDI cover too.

[CLEVEN]

Yep Yep easy fix. Commen thing to go out on alot of cars