Check engine light + unplugged tube

[Faaiz]

RE: 2007 W203 C230 Avantgarde

Hey folks, wondering if I could pick your brains.

My check engine light came on a yesterday so I did as such. When I looked, there's a tube that has been unplugged and I don't know what this component is.

I'm sure somebody on here knows.



So what is this?

Could this be causing the check engine light?

If it is, do I still need to get the CIL reset by somebody or will it disappear?

Thanks!

 

[whitenemesis]

Did you try reconnecting the tube and see if the check engine lamp extinguishes?

 

[Kompressor_Dude]

I've done this before when putting the airbox back on in a hurry. Also happens if you dont push the back of the airbox onto the MAF fully. P

Push it back on and the CEL should reset in a few journeys. if not a cheap OBDII reader to clear the code but i'm sure mine cleared on its own.

 

[Faaiz]

Seems to have done the trick. Check engine light has cleared.

Anybody know what that components is?