P0478 Diagnostic Trouble Code Discussion for April 2010
Exhaust Backpressure Control Valve Excessive
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| Help Request | Posted | |
| 1999 Ford F-250 Super Duty XL 7.3L no turbo boost VIN: 1FTNX21FXX P0478: Exhaust Backpressure Control Valve Excessive. Turbo won't come in, runs fine otherwise just no boost. found boost sensor tube clogged, cleaned but did not help. customer stated that it just started one morning with no other issues proceeding it. I am familar with cummings but not the power stroke have rea... |
April 08, 2010 |
