2021 Ford F-250 Super Duty: Diesel complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 25 owner complaints for the 2021 Ford F-250 Super Duty that list the diesel component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11751901 (filed 07/21/2026): “The contact owns a 2021 ford f-250. the contact stated that while driving 55 mph, the engine warning light illuminated and the message "limp mode in 34 miles" was displayed. the dealer was contacted. the vehicle was diagnosed with a diesel emission fuel injector failure. the contact associated the …”
- NHTSA complaint ODI #11739540 (filed 05/22/2026): “The contact owns a 2021 ford f-150. the contact stated while driving at 60 mph, the accelerator pedal was depressed, however the vehicle failed to accelerate as intended. the contact stated that several unknown warning lights illuminated and the engine seized. the contact stated while attempting to …”
- NHTSA complaint ODI #11733105 (filed 04/22/2026): “The contact owns a 2021 ford f-250. the contact received notification of nhtsa campaign number: 24v957000 (fuel system, diesel); however, the part to do the recall repair was not yet available. the contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. t…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Varies
Depends on the specific failure; get a diagnosis first. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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