TSB 18-2370

Some 2018-2019 Mustang vehicles built on or before 17-Oct-2018 equipped with a 2.3L EcoBoost engine and operating in altitudes of 1067 meters (3500 feet) above sea level and higher may exhibit an illuminated MIL with only DTC P0068 stored in the powertrain control module (PCM). Follow the Service Procedure steps to correct the condition.