Porsche 996 connector identifier

[alessioblaupunkt]

Hello, Porsche 996 market Europe but we have workshop manual for USA so there could be mismatch.

I have a 4 pin connector in the center of engine and I don't know where it goes.
Wires color are:

Brown
Red/green
Blue/green
Brown/pink

Where does it go?

Thank you.

[Meat-Head]

No idea, if was a pub quiz I would put air flow meter

if it runs, fans work, no codes, no warning lights, and pins in plug look dirty
move on

[alessioblaupunkt]

Mate was rebuilding the engine after 4 years of sitting down, had to reconnect every connector, he also moves the wiring, finally found correct route using the manual and some usefull pictures found on variuos
unofficial Porsche owner forum.
That connector was water temperature sensor.
There are 2, one in center of engine and one in oil/water heat exchanger (with different wires color)