FORD SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CATALYST Y PIPE WARRANTY EXTENSION.. IN SOME OF THE AFFECTED VEHICLES, CERTAIN VEHICLE OPERATING CONDITIONS CAN CAUSE THE CATALYST SUBSTRATE TO CRACK OR MELT. THIS CAN CAUSE SYMPTOMS INCLUDING BUT NOT LIMITED TO AUDIBLE NOISE FROM THE CATALYST Y PIPE AND/OR MALFUNCTION INDICATOR LAMP ILLUMINATION. CSC LETTER WAS RECEIVED. *PE