Ford F-250 SD 2021–2022 — technical service bulletin
Bulletin TSB 25-2549 · NHTSA communication 11025529 · issued Nov 6, 2025
Technical service bulletin
communication type
Power Train
component
2021–2022
model years
8
vehicle entries
Official summary
This article supersedes TSB 25-2119 to update the vehicles affected, parts list, and Service Procedure. Some of the vehicles listed in the Model statement above may exhibit an incorrectly illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P0420 and/or P0430 stored in the powertrain control module (PCM). This may be due to the software in the PCM. This condition does not affect vehicle drivability or durability.
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.