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International Automotive Technicians Network
Re: Low rail pressure
Posted to HD/Fleet Forum on 9/20/2024

The rail pressure varies depending on speed and eng rpm but always seems to set after a 0

throttle instance. Seems to be ok under a steady cruise. Its strange to me to see a low rail pres code on a deceleration. I will check the KOEO pressure, sensor and har... Login to read more.