TSB 17-0067

Some 2017 F-Super Duty vehicles equipped with a 6.7L engine and built on or before 04-Aug-2017 may exhibit an illuminated MIL with DTC P203B in the powertrain control module (PCM) memory. This may be due to a low voltage condition reducing the ability of the reductant level sensor to monitor reductant tank fluid levels. Follow the Service Procedure steps to correct the condition.