Some 2013-2016 F-Super Duty/2015-2017 Transit/2016-2017 F650-750 vehicles equipped with a diesel engine may exhibit DTC P207F and/or P20EE (Reductant Quality Performance) in the powertrain control module (PCM). When repairing DTC P207F or P20EE, refer to the online version of the powertrain control/emission diagnostic (PC/ED) manual for the latest diagnostics. The pinpoint test RD and diagnostic trouble code chart have been updated in section 4 and 5 for DTC P207F.