knock sensor throwing codes p0327

[electricalserv x5]

Hi guys anyone have experience with this code for the knock sensor?
On my n62 it stated about a week ago , it set the SES light , I had the code knock sensor bank 1 , I cleaned it then today I was driving around a bit, stop to pick up some stuff went to start her up and heard a mis-fire then the code [engine fail safe program] I drove a little bit turn the engine off , got out my code reader, seen the DTC knock sensor [bank 1 ] low voltage , also cam sensor .
Any help would be appreciated , I am not going to drive her until I find out what's going on .

[electricalserv x5]

Update Xoutpost 05/30/2016 ........................so..........2 weeks ago I changed the CCV and cleaned them also , very little dirty and no oil slunge , and I changed the CAP AND DIAFRAM , Well............................the CAP on bank 1 was not sitting correctly and was leaking OIL [a little bit].The CAP is defective and I will have to go get another tomorrow and make sure it is sitting correctly.
I am sure it was throwing CODES because of the vacuum leak ,It was fine before I changed the CCV out with the BMW Repair Kit........
Good thing I wasn,t driving much the past 2 weeks .