Unused Plug?

NoQuarter

Major
Nov 24, 2017
1,608
1,004
0
Indiana, USA
Ride
Z4 35is, 535xi, X5 35i
Under the intake and throttle body on my X5 is a plug that seems to never have been used. It has no protective cap on it.

You can't see it in this pic but this is where it is located

N55 plug.png


Anyone recognize this plug/location? I could not find the male side of the plug anywhere.
20180812_175648.jpg
 

doublespaces

Administrator
Oct 18, 2016
9,127
4,167
0
AZ
Ride
2009 E93 335i
Is that one of the knock sensors? Pretty sure they sit on cylinder 2 and 5 area.