Some 2019-2021 Edge/Nautilus/Transit Connect, 2020-2021 Escape/Corsair and 2021 Bronco Sport vehicles equipped with a 8F35 transmission may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0766 stored in the powertrain control module (PCM) and/or intermittent no reverse engagement concerns. This may be due to contamination in the main control valve body separator plate orifice. To correct the condition, follow the Service Procedure steps to clean the contamination from the main control plate.