Some 2021 F-150 vehicles equipped with a 2.0kW Pro Power Onboard inverter system and built on or before 15-Jun-2021 may experience a Pro Power Onboard Unavailable message displayed in the center display screen and alternating current (AC) power outlet sockets inoperative with diagnostic trouble code (DTC) B1438:03 stored in the body control module (BCM) or DTC B15DA:09 stored in the BCM without observable symptoms. This may be due to various software parameters in the direct current/alternating current converter module A (DCACA). To correct the condition, follow the Service Procedure to update the software in the DCACA. NOTE: A 2.0kW Pro Power Onboard inverter system is identified by the DCAC inverter assembly being located in the cabin under the rear seat on the left side of the vehicle. Refer to Workshop Manual (WSM), Section 414-05 > Component Location.
