good evening. went to auto zone to have the codes checked (cel on ) and possibly reset, codes read knock sensor 1 maybe bad and 2nd and third gear problem( p0732 and p0733. anyone know what these codes mean ? the autozone guy did not know how to use the odb-II to reset the codes. will that tool reset them or do i have to take it to a shop. also i didnt get any air flow meter code, can it still be bad ?
Thanks
