Isuzu NPR Fuel Pressure Issue

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Posted to HD/Fleet Forum on 4/20/2018 5 Replies

I have a 2016 NPR-HD coming up with codes P0088 Fuel Rail Pressure (FRP) Too High P0093 Fuel System Large Leak Detected

Replaced fuel filters Bypassed fuel filter on rail Ran vehicle without filter on engine

Getting 8000 psi when desired is 5000 psi

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Vehicle Data

2016 Isuzu NPR-HD 5.2L

VIN	JALC4W16XG
Engine	5.2 L

Vehicle Data

2016 Isuzu NPR-HD 5.2L

VIN	JALC4W16XG
Engine	5.2 L

5 Replies Received (View Replies)

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Vehicle Data

2016 Isuzu NPR-HD 5.2L

Vehicle Data

2016 Isuzu NPR-HD 5.2L