Can someone help identify what this sensor is please.
I was filling up my washer bottle and the cap dropped down near this sensor, when i reached down to get it i noted this sensor was really loose, it moves in and out of the socket but cannot turn much as it has a small lug preventing it from turning. The green cap on it comes off and reveals what looks like a little valve/nipple
Should it be so loose?
Its on the right hand side of the engine casing looking down on it. It has a sticker with some numbers on i cant read them all but it starts f55...
I have a 2016 Astra K 1.4 (150) Turbo.
Thanks for any help.