Winchester Furnace (made by York I Think) Flashing Error code 6? Its one of those 90+% gas furnaces with a Honeywell Furnace control...

Its one of those 90+% gas furnaces with a Honeywell Furnace control board on it. Worked fine a few weeks ago but immediately I have this problem.
Answers:    Call york and ask them what it vehicle.
YORK
631 South Richland Avenue
York, PA 17403
United States
Phone: (717) 771-7890
Fax: (717) 771-7381
Look on the back of the furnace access panel. There should be a chart to narrate you the code. For a step by step troubleshooting guide, check out the furnace page at www.hvac-for-beginners.com