knock sensor, is really NOx meaning Nitrous oxide emissions, is what that means, that senses that the car isnt running good...They could be pluged up, but if your car knocks, its not running properly, and with 600s it can be a lot of things, they are picky cars. Ill ask my friend, he loves to work on 600s.
EDIT: I AM IN ERROR PLEASE IGNORE THIS POST
No Benzes in the stable at the moment, but itching for one again.
Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 300E Amg Hammer 88k mi sold
1992 500E 156k mi sold
Last edited by omegabenz; 03-31-2003 at 04:02 PM.