Technical Service Bulletin TSB 25-2549 — 2021 FORD F-550 SD
POWER TRAIN
Bulletin Details
| TSB ID | TSB 25-2549 |
| Manufacturer | |
| Vehicle | 2021 FORD F-550 SD |
| Component | POWER TRAIN |
| Communication Date |
Bulletin 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.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.