Ford F-150 2021–2022 — technical service bulletin
Bulletin SSM 50412 · NHTSA communication 10207118 · issued Jan 20, 2022
Technical service bulletin
communication type
Engine
component
2021–2022
model years
2
vehicle entries
Official summary
Some 2021-2022 F-150 vehicles equipped with a 3.5L EcoBoost engine may exhibit engine misfire concerns with or without DTCs. If diagnostics lead to ignition coil replacement, swap the ignition coil(s) between the misfired cylinder and a known good cylinder. Only replace the ignition coil if the misfire concern follows that particular ignition coil. If the misfire condition does not follow the coil, apply dielectric grease to the boot, reinstall the ignition coil in the original cylinder and continue normal diagnostics in Workshop Manual (WSM), Section 303-07C.
Vehicles covered
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.