03Windstar

I have an 03 Windstar Limited and just had the 60,000 mile service done (which included the fuel filter replacement). Since then, from time to time I get a "fuel error" message in the display on the dashboard. It usually comes on when accelerating, but sometimes while cruising.. but then sometimes not at all for about 2 weeks. Anyone know what the "fuel error" means or what could be causing it?

Thanks!