I have a 2012 Honda accord LS very basic. I am getting this very high pitch noise out of my speakers. Im pretty sure I do not have the anc. ive searched every where for the speakers. does any one els have any ideas how to get rid of the noise/ I have also went into the diagnostic for the stero and shut of the amp andit still keeps going.

 

is the system fully stock or are there aftermarket components?

There is no ANC in that setup.