2021 Ford F-250 SD fuel/propulsion system problems
12 owner complaints filed with NHTSA name the fuel/propulsion system on the 2021 Ford F-250 SD — 7% of all complaints for this model year.
What owners report
“I took a functional vehicle to Swant Graber Ford in Barron, WI in on [XXX] for Recall 24S78 and since then I have had numerous vehicle issues involving the PCM that they flashed. I have up to 16 different codes when the check engine light comes on including numerous communication U-codes indicating…”
filed Jul 1, 2026
“The secondary fuel filter is leaking and Ford has told me my vehicle was manufactured 1 month too early and doesn’t qualify for a previous recall…They know about the secondary fuel filter housing cracking and being an issue!”
filed Mar 23, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other F-250 SD years
| Year | Reports | Share |
|---|---|---|
| 2024 F-250 SD | 1 | 3% |
| 2023 F-250 SD | 2 | 5% |
| 2022 F-250 SD | 13 | 11% |
| 2020 F-250 SD | 27 | 10% |
| 2019 F-250 SD | 30 | 3% |
| 2018 F-250 SD | 13 | 3% |
| 2017 F-250 SD | 40 | 3% |
| 2016 F-250 SD | 16 | 6% |
| 2015 F-250 SD | 20 | 7% |
| 2014 F-250 SD | 3 | 12% |
| 2013 F-250 SD | 2 | 10% |
| 2012 F-250 SD | 4 | 7% |
Other reported problem areas on the 2021 Ford F-250 SD
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.