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International Automotive Technicians Network
Re: Exhaust Fluid System Fault message displayed
Posted to HD/Fleet Forum on 5/15/2019

The warm-up/ drive cycle procedure listed in the TSB needs to be followed EXACTLY how it is written or the message will not clear (pay particularly close attention to the recommended temps). Sometimes helps to do a codes clear (even if there is no codes) befor... Login to read more.