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P0091 Diagnostic Trouble Code Discussion for May 2010

Fuel Pressure Regulator 1 Control Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0091
Help Request Posted
2005 Chevrolet W3500 Tiltmaster W3S042 5.2L Surge, Cuts out, Stall, Poor Fuel Economy, MIL Lamp on VIN: Y8BE5B1656
P0091: Suction Control valve low current. This has a Isuzu 5.2 Diesel customer was on freeway diving for about 10 min. when the check eng. light came on and truck went into limp mode, he shut it down and restarted and was able too drive back to his work. Looking for some advice on where to go with t...
May 20, 2010