2021 Ford F-550 SD Engine Problems
- Complaints
- 2about this part
- Share
- 17%of 12 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2021 Ford F-550 SD, 17% of the 12 complaints for this model year. 2 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Operator was driving a 2021 Ford F550 equipped with an Altec AT48M aerial upfit. As he was driving the operator noted that the check engine light came on and almost immediately followed by the message center displayed Low Fuel Pressure warning. As he was preparing to stop, he could see smoke coming out from under the hood of the truck. As he exited the cab, he could see smoke and flames coming out of the truck.”
NHTSA complaint #11667475, filed 2025-06“While driving down the road at approximately 45 mph, under normal conditions, with no warning indicators the low fuel pressure light came on. When the driver stopped the vehicle he lost all power and observed smoke emanating from the underside and hood of the vehicle. Prior to him exiting the vehicle he observed flames shooting out from under the console towards his feet. Upon exiting the vehicle I saw flames under the hood of the vehicle and utilized his supplied fire extinguisher to attempt to put the fire out. …”
NHTSA complaint #11433239, filed 2021-09Related service bulletins
- 11035635Jul 28, 2026Customer Satisfaction Program 25M01 Certain 2021 Model Year F-150 3.0L Diesel Engine and 2020-2022 Model Year Super Duty with 6.7L Diesel Engine Nitrogen Oxide (NOx) Sensor…
- 11034010Jun 19, 2026This article supersedes TSB 25-2572 to update the Parts List to correct the part number LC3Z-6006-L to LC3Z-6781-A, remove the flex plate bolts AL3Z-6379-BA from the parts list…
- 11025854Nov 26, 2025This article supersedes TSB 25-2322 to update the Service Procedure, Labor Operations and Parts List. Some of the vehicles listed in the Model statement above may exhibit an…
- 11025526Nov 10, 2025Some 2021-2025 Expedition/Navigator/F-150/F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis/F-650/F-750/Transit vehicles equipped with a 2.7L/3.5L (non…
- 11024021Oct 4, 2025Some 2021-2025 Expedition/Navigator/F-150/F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis/F-650/F-750/Transit vehicles equipped with a 2.7L,3.5L EcoBoost…
- 11023852Sep 24, 2025Certain 2011-2022 Model Year Super Duty Vehicles Equipped with 6.7L Engine - Emission Control Information Label Update for Qualified Vehicles
- 11023851Sep 24, 2025Certain 2017 and 2020-2022 Model Year Super Duty Vehicles Equipped with 6.7L Engine - Emission Control Information Label Update
- 11022355Aug 23, 2025Certain 2011-2022 Model Year Super Duty Vehicles Equipped with 6.7L Engine - Emission Control Information Label Update for Qualified Vehicles
- 11022379Aug 22, 2025Certain 2017 and 2020-2022 Model Year Super Duty Vehicles Equipped with 6.7L Engine - Emission Control Information Label Update
- 11022380Aug 12, 2025Certain 2020-2023 Model Year Multiple Vehicle Line Trucks Equipped with Diesel Engines - Particulate Matter (PM) Sensor Reimbursement
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 2 | 22% |
| 2021 | 2 | 17% |
| 2015 | 4 | 36% |
| 2014 | 2 | 22% |
| 2012 | 3 | 50% |
| 2008 | 6 | 23% |
| 2007 | 6 | 26% |
| 2006 | 3 | 7% |
| 2005 | 2 | 6% |
| 2004 | 1 | 2% |
| 2003 | 2 | 6% |
| 2002 | 1 | 5% |
| 2000 | 2 | 3% |
Other parts of the 2021 Ford F-550 SD
10 complaintsEngine cooling
1 complaintsSteering
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2021 Ford F-550 SD
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology