I was changing my plugs and discovered I may have disconnected a wire. There is a wire that comes up from under the engine directly between the plugs and ends with a white connecter. Not sure if this became unplugged because I can't seem to find where it should be connected. I looked into the connector and it looks pretty clean. This leads me to believe I may have been disconnected while I was changing the plugs.

Please help!

 

Sounds like that's what it could be. The sensor is on the side of the oil pan, trace it from there.
Good luck