2021 Ford F-450 SD Engine Problems
- Complaints
- 2about this part
- Share
- 11%of 18 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-450 SD, 11% of the 18 complaints for this model year.
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.
“High pressure fuel pump failed while driving towing a trailer. Was able to pull over safely, entire fuel system needs to be replaced. Unknown if anything else was damaged yet. Vehicle is still in for repairs, estimate is between 9-13k parts and labor. I hope it didn't destroy the entire engine.”
NHTSA complaint #11633674, filed 2025-01“Vehicle shut down while in motion on highway which caused for brakes and steering to fail. Vehicle was towed to sun state Ford dealership where they did a diagnosis. They found excessive amounts of metal in the high pressure fuel system. They had to replace the entire fuel system plus replaced all injectors which now has an open invoice of $15,923.97. After research we found out that there is a recall on the cp4 which is the manufactire recall number 24s78 and NHTSA recall number 24v957. Ford is not willing to cover the cost of the recall repairs and the dealership is not cooperating as well. …”
NHTSA complaint #11676722, filed 2025-07Related 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…
- 11030797Mar 20, 2026Some 2021-2026 F-150 vehicles equipped with a 5.0L/5.2L engine, 2021-2025 F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis vehicles equipped with a 6.8L/7.3L engine…
- 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
Engine: other model years
Other parts of the 2021 Ford F-450 SD
5 complaintsTransmission and drivetrain
4 complaintsBrakes
3 complaintsFuel system
3 complaintsOther or unknown
3 complaintsBody and structure
3 complaintsLatches, locks and linkages
2 complaintsTires
1 complaints
← All problems reported for the 2021 Ford F-450 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