Hello All,
I looked under my hood and notice a sensor cap of some sort is missing by the vehicle emission control information; I posted an image of what I am referring to. I do have a check engine light on can this be the cause? My family is the original owner of this car, so I never realized it until recently that this was missing it went to the dealer a long time ago so maybe it was never put back. What is that called so I can purchase the part.