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Message: [QUOTE="bigsix300, post: 281384, member: 4747"] OK this is what the description of the code. This error will be set if the fuel pressure in the rail is too low and the controller cannot regulate it to the set point. Also this is the service instructions. Low pressure system, wiring to VCV and PCV, FUP sensor, pump. Also got this the other day i was afraid of it being the hpfp though I had not changed the filter since i had gotten the truck which i hadn't put many miles on the truck. So i replaced the fuel filters. The code did not come back nor the noise. I would say replace the filters first and if its still noisy and getting the code I would think maybe the low pressure fuel pump. [/QUOTE]

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