Just purchased my car 1 previous owner with only 140 k original miles it is a 1994 Buick LeSabre limited I have a security...

I have a engine check a security check had a try with Obd 1 and OBD 2 all I got was check connection three times for both...

There is the possibility that you don't have the right jack on your headphones Those little grooves must line up perfectly inside the jack or they will not work If you have the packaging I would check it to see if it says it is compatible with your phone Hope this helps

My advice is go to an area parts store ( Auto Zone ) for example and have them put their scanner on it that may temporarily get it to go away maybe up to 3 days Driving it is the only sure way I know of other than possibly removing the negative cable from your battery which is supposed to reset your cars computer but may trigger your security system