ETC ENGINE FAILSAFE MODE AND ENGINE LIGHT ON

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THE FIRST TIME THE ENGINE FAILSAFE MODE WARNING APPERARED WAS AFTER TURNING THE VEHICLE ON AND ALLOWING IT TO WARM UP BEFORE GOING TO WORK. THE NEXT FEW TIMES IT CAME ON WAS AT A STOP LIGHT AND WHILE CLIMBING UP A HILL. ON 6/15/10 THE WARNING CAME ON AGAIN JUST AFTER START UP; I SHUT THE ENGINE OFF RESTART AND ENGINE FAILSAFE MODE NOT SHOWN. FEW MIMUTES LATE AT FIRST STOP, WARNING CAME ON AGAIN ALONG WITH THE SERVICE ENGINE LIGHT. I LOVE MY LINCOLN AND SPEND AN ENORMOUS AMOUNT CARING FOR IT. IS THIS PROBLEM GOING TO BANKRUPT ME? THAMK YOU SCIENCE MAJOR