Ford F-250 SD 2020–2022 — technical service bulletin
Bulletin SSM 50342 · NHTSA communication 10205480 · issued Dec 13, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2022
model years
12
vehicle entries
Official summary
Some 2020-2022 F-Super Duty vehicles equipped with a 6.7L engine may experience a lack of power due to snow packing of the engine air cleaner when operating in extremely snowy conditions. Diagnostic trouble code (DTC) P1548 may be present in the powertrain control module (PCM). A heavy snow environment pre-filter service kit (service part LC3Z-9K635-AA) is now available for use but is not a warrantable item. It is recommended that the service kit be removed at temperatures greater than 50à °F (10à °C) and reinstall in subsequent winter seasons in order to maintain optimal vehicle performance
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.