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Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

fault code p0090 questions!!!

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Old 03-04-2011, 02:04 PM
72fj's Avatar
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Default fault code p0090 questions!!!
i have 05 c4500 in shop and need to locate the regulator control circut keeps blowing fuse any directions would help. thank you 72fj!!!!
 
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Old 03-11-2011, 11:00 AM
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the fault code P0090 is a FUEL RAIL PRESSURE (FRP) REGULATOR CONTROL CIRCUIT OPEN
 
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Old 03-11-2011, 05:26 PM
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Default fault code p0090!!!
have made correct repairs and truck left my shop on 03/09/11 ipr valve shorted out. thanks for the reply back any way!!!
 
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