If it's like a Ford it should store the codes. You will need to have a DD service center ( or good diesel shop) run a diagnostic on it. May be as simple as a loose connection. But that will give a hint at what connection to start at.
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Clint C. Johnson / Fran Balm
Coach 289 '92 42'6" 8V92 Hybrid
Several Toads:
XL-7
F-350 4X4 Crewcab
F-250 4X4 Crewcab
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