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Tom, ASE Certified Technician
Category: Car
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Experience:  ASE Certified Master Technician
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Isuzu NPR: DTC. 0091

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DTC. 0091
Hi I’m Tom and I’m here to assist you with your issue today. Before I get you a fully researched answer, I have to ask you a couple preliminary questions. Fuel Pressure Regulator Solenoid 1 Control Circuit Low Voltage is that code.Usually the fuel pressure regulator or the solenoid is bad and this link will show you how to properly test it to fix this issue.
Remember Im here if you need any further assistance for anything at all it will be for no further charge.Please rate excellent service so I can get credit for my help thanks.Bonuses greatly appreciated.
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Customer: replied 3 years ago.
problem solved, bad wire connection at fuel pressure regulator. Thank - you


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