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U1900 Diagnostic Trouble Code Discussion for October 2011

CAN System Communication Error

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Trouble Ticket Help Requests for DTC U1900
Help Request Posted
2006 Ford Fusion SE 3.0L MIL Lamp on VIN: 3FAHP07186
U1900: Chip malfunction can bus fault. This Fusion came from another shop, the engine runs fine, no misfires, etc, after warming up, upon acceleration the trac light will appear, the wrench symbol appears, the trans goes into limp home mode, the check engine light comes on, and if you continue to d...
October 07, 2011