Originally Posted by Exempt

If its this:

https://www.honda-acura.net/forums/s...d.php?t=221804


Then thats the thermoswitch... Turns on the radiator fans at a certain engine temperature... The one next to it is oil pressure sensor... The A6 has no knock sensor, same as the Z6... Only the DOHC VTEC engines have it, if I remember correctly...