knock sensor??

I get check engine lamp w/knock sensor code indication. It has two sensors. I changed front, but can't get to the rear. is there a secret?? Also, can I disable the rear somehow and just use front one?

any help will be appreciated...merle

Welcome to AF. You can just cut the wire and still have a code, for what it is worth. Again, a common issue on these forums, post the year for more comprehensive help and the actual code.