Recently, my CEL came on. I had the guys at Autozone read the code and they said it was the knock sensor on bank 2. I disconnected the battery to clear it but after 100 miles or so it came back on. Idling, my engine runs as quietly as it ever has (can't tell it's running if the windows are up) so I'm hoping that the sensor has gone bad. I can't hear any knock at any speed but the re-appearance of the light has noticeably affected the engine performance. Does anyone have a link that even shows where the sensor is located? If I can find it, I can replace it.

 

I believe it is under the intake manifold. Can anyone confirm this?