Some 2013 Ford F-150 vehicles built on or before 9/18/2012 and equipped with a 3.5L GTDI (gasoline turbocharged direct injection) Ecoboost engine may exhibit an intermittent stumble and/or misfire on hard acceleration after an extended drive at highway speed during humid/damp conditions.
This could result in a steady or flashing MIL with DTC P0300, P0304, P0305, P0306, primarily for misfire. P0430 may also be present.
If DTC P0430 is present, replace the left hand catalytic converter. If not, install a new CAC (charge air cooler).
Refer to section 303-12 in the workshop manual.