kevin2012

I had found 2 unknown and unconnect connectors at the fuse panel of my 1991 S4 and wonder what they are. Appreciate if someone can tell me what they are. Thks.

ammonman

The first pic looks like the O2 sensor connector. Not sure on the other.

MIke

Leon Speed

First one is the O2 sensor, you will find the other side under or behind the fuse panel. The other one I haven't seen before.

kevin2012

I don't have a cat in my 1991 s4, does it mean that no need to connect to any O2 sensor? Thks.

linderpat

yes

CraigL

1. O2 sensor
2. This looks exactly like an airbag wiring connector I encountered near the Pod and Steering Wheel mount on my recent dash out adventure. Maybe it involves the airbag on the right hand side of the car.

kevin2012

Thanks everyone for the quick respond. It can put my mind to peace because my car has none of those 2 things.