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Re: ISB6.7 cm2250 2012 bus code 3575
Posted to HD/Fleet Forum on 1/16/2018 4 Replies

Before you do anything, unplug the electrical connector from the doser unit and see it has any def leaking out. They are breaking and leaking. If I remember right, the pressure sensor is inside the doser unit so if there is debris going through it you may need... Login to read more.

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