i was changing my oil today when i noticed a connector unplugged above the oil filter. from what I have been reading, I am assuming it is the knock sensor...2 connectors grey and green just above oil filter on 2005 tl. Do I have the rioght sensor? What would some symptoms of this be? lately I have noticed my car unusually sluggish and poor gas mileage. I few months back i had some tranny work done at the dealership, and the car has never been the same. I reconnected the pug as best i could and am gonna take it for a ride on my way to the gym tonite. Any input would be helpful

 

I'm not sure if that's the knock sensor, but it being unplugged would do exactly what you are describing. You would have a check engine light on also.

 

thats the weird thing...I had no check engine light on at all. also after i reconnected it when i tried to restart my car it took a few tries

 

If it's right above it, it's a Power Steering Pressure switch.

 

there are two connectors both with one side being grey and one side green. the one that was unplugged was above the other one when looking up from the ground.

 

Here is a screenshot. I wonder why it was disconnected.