Can anyone explain to me why I would be having an O2 sensor alarm? I took it to the dealer and they replaced it. The light still came back on. Today I replaced the one they replaced. Took it for a 23 mile drive, then let it sit idling for about 10 minutes infront of the house. After 23 miles and then sitting for 10 minutes, the light came back on. It's not the gas cap...I checked that.

 

What do the connector pins look like in the connector are they bent or corroded? Could be bad pin continuity, other than that I wouldnt know what else.