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International Automotive Technicians Network
Re: Exhaust fluid quality poor message
Posted to HD/Fleet Forum on 1/9/2026

[...trimmed text...]

Yes, a little weak on information.

What do you mean by "ran the processes?

Did you do a Reductant Fluid Quality Test (RFQT)?

Will the vehicle allow a Reductant Fluid Quality Test (RFQT)?

If y... Login to read more.