NHTSA Complaint #10991079 — 2013 VOLKSWAGEN PASSAT

I OWN A 2013 VW PASSAT DIESEL WHICH HAS A BAD NITROGEN OXIDE SENSOR AT 47,300 MILES. I HAVE LEARNED THAT THIS PART IS NOT COVERED UNDER EMISSIONS WARRANTY AND MANY OTHER VW CAR OWNERS HAVE EXPERIENCED FAILURES WITH THIS SAME SENSOR. WITH ALL THE CURRENT EXISTING DIESEL EMISSION PROBLEMS AND FINES, YOU WOULD THINK THAT THIS CRITICAL SENSOR WOULD BE PART OF THE EMISSIONS WARRANTY. MY LOCAL VW DEALER AND THE VW CORPORATION WANTS ME TO PAY OVER $800 TO FIX A CRITICAL EMISSION PROBLEM WHICH IS AN ONGOING ISSUE WITH MANY VW OWNERS. THIS IS A DEFECTIVE PART FOR WHICH THEY HAVE BEEN FINED IN THE PAST (2005). ALL VEHICLES WITH THIS DEFECTIVE NITROGEN OXIDE SENSOR ARE INCREASING THE WORLD POLLUTION. WHY IS THIS SENSOR NOT PART OF A RECALL, NOT PART OF AN EXTENDED EMISSIONS WARRANTY, AND WHY AM I AND MANY OTHER OWNERS STUCK PAYING FOR DEFECTIVE PARTS? UNDER THE EMISSIONS SETTLEMENT PROGRAM, VOLKSWAGEN HAS AGREED TO "PROMOTE ZERO EMISSIONS VEHICLE TECHNOLOGY". SO, WHY IS THERE NOT A RECALL OR WARRANTY ON THE NITROGEN OXIDE SENSOR?