Ford Mustang Mach E 2021–2022 — technical service bulletin
Bulletin TSB 22-2491 · NHTSA communication 10228802 · issued Dec 16, 2022
Technical service bulletin
communication type
Electrical System
component
2021–2022
model years
3
vehicle entries
Official summary
Some 2021-2022 Mustang Mach-E built on or before 17-Sep-2022, 2022 e-Transit vehicles may exhibit an illuminated red triangle indicator lamp with diagnostic trouble code (DTC) P27B4 stored in the secondary on-board diagnostic control module C (SOBDMC) or the charge status indicator (CSI) is blinking red with DTC P0A7F stored in the battery energy control module (BECM) and/or P0CF7 stored in the secondary on-board diagnostic control module A (SOBDM). This may be due to an unsecured plug-in electric vehicle supply equipment (EVSE). To correct the condition, follow the Service Procedure to reprog
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.