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P0478 Diagnostic Trouble Code Discussion for November 2008

Exhaust Backpressure Control Valve Excessive

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Trouble Ticket Help Requests for DTC P0478
Help Request Posted
2005 Ford F-250 Super Duty King Ranch 6.0L No Start, Stall VIN: 1FTSW21P65
P0478: Exhaust Backpressure Control Valve Excessive. First posting,don't work much on diesels. Customer just got back from a 4,000 mile trip. Truck died on way home twice. He said he sprayed it with starting fluid to make it run both times. It's got a k&m air filter on it, a remote control starter, and a per...
November 14, 2008