P0478 Diagnostic Trouble Code Discussion for July 2020
Exhaust Backpressure Control Valve Excessive
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| Help Request | Posted | |
| 2004 Ford F-350 Super Duty King Ranch 6.0L Hesitation, Surge VIN: 1FTWW32P94 P0478: Exhaust Backpressure Control Valve Excessive. Hey TechHelp! Could use any wisdom you have to offer on this one. This customer is complaining about a severe lack of power, accompanied by a very noticeable whine sound whenever you're off idle. The sound is so strong, I can't help but think it's relat... |
July 06, 2020 | |
| 2004 Ford F-350 Super Duty King Ranch 6.0L Hesitation, Surge VIN: 1FTWW32P94 P0478: Exhaust Backpressure Control Valve Excessive. Hey TechHelp! Could use any wisdom you have to offer on this one. This customer is complaining about a severe lack of power, accompanied by a very noticeable whine sound whenever you're off idle. The sound is so strong, I can't help but think it's relat... |
July 07, 2020 |
