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2021 Ford F-250 Sd

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2021 Ford F-250 Sd do not stand out strongly from the model-year median of 89.

About this comparison →

When problems were reported

Mileage at the reported incident

49 reports with mileage · 114 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Fuel System, Diesel. Review the 25 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

3 crash reports0 fire reports0 injury reports

What owners actually said

163 reports
Mileage unknown · Aug 24, 2025
Electrical SystemLane DeparturePower Train

This car has had a recall for almost year. I’m am terrified to drive my truck especially with my kids in it. Sometimes if I press the gas trying to cross traffic, it takes a while to go. Also sometimes it won’t crank up and start. It takes awhile few tried. My back up camera doesn’t work the way it should

NHTSA ODI #11682653

Mileage unknown · Aug 8, 2025
Fuel/propulsion System

Fuel leaking from above fuel filter housing located on undercarriage of truck. Fuel leak is considerable and was a sudden failure versus developing over time.

NHTSA ODI #11679436

Mileage unknown · Aug 5, 2025
Fuel/propulsion SystemPower TrainUnknown Or Other

Hi. I took my 2021 f250 6,7 to the ford dealership as it was having trouble starting, and just wasn’t running great. They changed the batteries, and told me it was a NOX sensor. So I went and got my truck to fix the sensors myself; because they wanted to charge me close to 3 grand. The next day I got up, lo and behold it wouldn’…

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Hi. I took my 2021 f250 6,7 to the ford dealership as it was having trouble starting, and just wasn’t running great. They changed the batteries, and told me it was a NOX sensor. So I went and got my truck to fix the sensors myself; because they wanted to charge me close to 3 grand. The next day I got up, lo and behold it wouldn’t crank. I had to have it towed back to the dealership. I tested codes before I had it towed, and took a video of it not cranking. The following codes showed. P2291 PCM - Injector Ctrl Press Too Low - Engine Cranking P2209 PCM - NOx Sens Heater Sense Circ Range/Perf Bank 1 Sens 1 U029D PCM - Lost Comm With NOx Sensor A P2535 PCM - Ignition Switch On/Start Pos Circ High U300A BCM - Ignition Switch It’s been in the shop a week , they called Friday saying it was starting, and there was nothing wrong with it. So I replied with all the codes, and told them there was definitely something going on. So they checked it again Monday and it wouldn’t start. Now today (aug 5 tues.) they say it may have a vacuum leak. Although non of the codes point to vacuum leak. I have no idea what to do now.

NHTSA ODI #11678590

107,244 miles · Jul 31, 2025
Engine And Engine Cooling

The contact owns a 2021 Ford F-250. The contact stated that upon starting the vehicle, there was an abnormal valve noise detected. There were no warning lights illuminated. The vehicle was taken to the local dealer, where it was diagnosed with delaminated lifter cam and rockers and push rods. There were metal shavings found in t…

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The contact owns a 2021 Ford F-250. The contact stated that upon starting the vehicle, there was an abnormal valve noise detected. There were no warning lights illuminated. The vehicle was taken to the local dealer, where it was diagnosed with delaminated lifter cam and rockers and push rods. There were metal shavings found in the engine oil. The dealer informed the contact that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and opened a case and confirmed there was no repair coverage for the failure. The failure mileage was approximately 107,244.

NHTSA ODI #11677437

Mileage unknown · Jul 8, 2025
Fuel System, Diesel

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 local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair.…

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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 local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ODI #11671907

Mileage unknown · Jul 8, 2025
Air BagsElectrical SystemForward Collision AvoidanceCrash

I hit an elk at 65 mph while pulling a flatbed trailer loaded with 4000 lbs of hay. The crash warning light did not come on nor did the air bags deploy. The whole front end of the truck is badly damaged. I contacted my local Ford dealer with this information and was told by the service agent that the body shop will handle this. …

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I hit an elk at 65 mph while pulling a flatbed trailer loaded with 4000 lbs of hay. The crash warning light did not come on nor did the air bags deploy. The whole front end of the truck is badly damaged. I contacted my local Ford dealer with this information and was told by the service agent that the body shop will handle this. As my concern is how hard do you have to hit something to get the airbags to deploy. I’m concerned for my safety while driving this truck again if it can be repaired. I’m taking it to the repair shop today. I wanted to report this as Ford will be ZERO help moving forward.

NHTSA ODI #11671870

Mileage unknown · Jun 24, 2025
Back Over PreventionFuel System, Diesel

The contact owns a 2021 Ford F-250. The contact received notifications of NHTSA Campaign Numbers: 24V957000 (FUEL SYSTEM, DIESEL) and 25V048000 (BACK OVER PREVENTION); however, the parts to do the recall repairs were not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reason…

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The contact owns a 2021 Ford F-250. The contact received notifications of NHTSA Campaign Numbers: 24V957000 (FUEL SYSTEM, DIESEL) and 25V048000 (BACK OVER PREVENTION); however, the parts to do the recall repairs were not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ODI #11669006

Mileage unknown · Jun 24, 2025
Engine

ON YOUR VEHICLE, IT MAY BE POSSIBLE FOR AGED BIODIESEL DEPOSITS TO ACCUMULATE IN THE HIGH PRESSURE FUEL PUMP. THIS MAY RESULT IN EXTENDED CRANKING WITHOUT STARTING WHILE THE VEHICLE IS PARKED, OR LOSS OF MOTIVE POWER WHILE DRIVING. My vehicle has been inoperative for MONTHS due to this recall, per the manufacturer. We had no wa…

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ON YOUR VEHICLE, IT MAY BE POSSIBLE FOR AGED BIODIESEL DEPOSITS TO ACCUMULATE IN THE HIGH PRESSURE FUEL PUMP. THIS MAY RESULT IN EXTENDED CRANKING WITHOUT STARTING WHILE THE VEHICLE IS PARKED, OR LOSS OF MOTIVE POWER WHILE DRIVING. My vehicle has been inoperative for MONTHS due to this recall, per the manufacturer. We had no warning lights or problems prior to trying to start the vehicle and that failing. We took it to the manufacturer, and they said it was because of the recall. The recall date is Dec 20,2024 and it is now June 24, 2025. That is 6 months without a remedy. This is not being taken care of in a timely manner.

NHTSA ODI #11668804

Mileage unknown · Jun 17, 2025
Structure

Electronic tailgate randomly opens while driving and causes significant safety issue while hauling materials. Has happened multiple times.

NHTSA ODI #11667451

52,000 miles · Jun 13, 2025
Power Train

The contact owns a 2021 Ford F-250. The contact stated while driving approximately 5 MPH, there was an abnormal popping sound coming from under the floorboards. The contact was towing a 16-foot dump trailer with an approximate load of 16,000 lbs. during the failure. The contact stated no warning light was illuminated. The contac…

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The contact owns a 2021 Ford F-250. The contact stated while driving approximately 5 MPH, there was an abnormal popping sound coming from under the floorboards. The contact was towing a 16-foot dump trailer with an approximate load of 16,000 lbs. during the failure. The contact stated no warning light was illuminated. The contact stated that the vehicle lost motive power. The contact stopped the vehicle and inspected the rear of the vehicle and became aware that the rear of the drive shaft was hanging down and touching the road surface. The contact had the vehicle towed to a dealer who diagnosed that the rear axle housing had failed, causing the driveshaft to shear off. The vehicle was not repaired. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline for assistance. The contact researched online and related the failure to NHTSA Campaign Number: 21V536000 (Power Train); however, the VIN nor the model vehicle was included. The failure mileage was approximately 52,000.

NHTSA ODI #11666822

Official recalls

12

26V158000 · Fuel System, Diesel:delivery:fuel Pump

Mar 17, 2026

Ford Motor Company (Ford) is recalling certain 2020-2022 F-Super Duty F250, F350, F450, F550, 2021-2022 F600, and 2022 F750 vehicles previously repaired incorrectly under recall number 24V957. Biodiesel deposits may form on the pump drivetrain roller components, which could lead to failure of the high pressure fuel pump.

Consequence & remedy

Consequence: High pressure fuel pump failure can cause a loss of drive power, increasing the risk of a crash.

Remedy: Dealers will update the powertrain control module (PCM) software, free of charge. Owner notification letters were mailed mailed April 7, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S17. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on March 18, 2026.

25V686000 · Back Over Prevention:software

Oct 10, 2025

Ford Motor Company (Ford) is recalling certain 2020-2022 F-250 SD, F-350 SD, and F-450 SD vehicles. The 360-degree view camera system may not display a rearview image properly in certain lighting conditions.

Consequence & remedy

Consequence: A rearview camera image that does not display properly can reduce the driver’s view behind the vehicle, increasing the risk of a crash.

Remedy: Dealers will update the image processing module software, free of charge.This will be a phased campaign, with the remedy becoming available in different phases based on model years. Interim letters notifying owners of the safety risk were mailed on October 30, 2025. Additional letters will be mailed once the remedy is available on each phase. Owner notification letters were mailed May 19, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SA8. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on October 13, 2025.

25V626000 · Steering:column

Sep 19, 2025

Ford Motor Company (Ford) is recalling certain 2020-2021 F-250, F-350, and F-450 vehicles. The steering column upper shaft may detach from the steering column and result in a loss of steering control.

Consequence & remedy

Consequence: A loss of steering control increases the risk of a crash.

Remedy: Dealers will inspect the steering column, and repair or replace the upper shaft as necessary, free of charge. Owner notification letters were mailed February 20, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S94. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning September 23, 2025.

25V455000 · Fuel System, Gasoline:delivery:fuel Pump

Jul 7, 2025

Ford Motor Company (Ford) is recalling certain 2021-2023 Bronco, Explorer, Lincoln Aviator, F-250 SD, F-350 SD, F-450 SD, F-550 SD, 2021-2022 Lincoln Navigator, Mustang, F-150, and 2022 Expedition vehicles. The low-pressure fuel pump may fail, which can result in an engine stall while driving.

Consequence & remedy

Consequence: An engine stall increases the risk of a crash.

Remedy: Dealers will replace the low pressure fuel pump on super duty vehicles and update the powertrain control module (PCM) software on all other affected vehicles, free of charge. Owner notification letters were mailed July 27, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S75.

25V442000 · Back Over Prevention:software

Jun 27, 2025

Ford Motor Company (Ford) is recalling certain 2018-2022 Transit Connect, 2019-2020 MKZ, MKX, Edge, Continental, F-150, Nautilus, Fusion, 2019-2023 Ranger, Mustang, 2020-2021 EcoSport, Expedition, Navigator, 2020-2022 Escape, F-250 SD, Corsair, 2020-2023 Aviator, Transit, 2020-2024 Explorer, 2021-2024 Bronco Sport, and 2022-2024 Maverick vehicles. A software error may cause the rearview camera to display a blank image, or the image may remain on the display after the backing event has ended.

Consequence & remedy

Consequence: A rearview camera that displays a blank image can reduce the driver's view behind the vehicle. A rearview image that continues to be displayed after the vehicle is shifted out of reverse may distract the driver. Both of these situations can increase the risk of a crash.

Remedy: Dealers will update the rearview camera software, free of charge. Owner notification letters were mailed September 4, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S72.

25V048000 · Back Over Prevention: Sensing System: Camera

Jan 31, 2025

Ford Motor Company (Ford) is recalling certain 2021 Expedition, 2021-2022 Super Duty F-250, F-350, F-450, F-550, F-600, and 2020-2022 Lincoln Corsair vehicles. The rearview camera may display a blank or distorted image.

Consequence & remedy

Consequence: Rearview camera failure can reduce the driver's view of what is behind the vehicle, increasing the risk of a crash.

Remedy: Dealers will replace the rearview camera as necessary, free of charge. Owner notification letters were mailed September 18, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S05.

24V957000 · Fuel System, Diesel:delivery:fuel Pump

Dec 20, 2024

Ford Motor Company (Ford) is recalling certain 2020-2022 F-Super Duty F250, F350, F450, F550, F600, and 2021-2022 F-650, F750 vehicles. Biodiesel deposits may form on the pump drivetrain roller components, which could lead to failure of the high pressure fuel pump.

Consequence & remedy

Consequence: High pressure fuel pump failure can cause a loss of drive power, increasing the risk of a crash.

Remedy: Dealers will update the powertrain control module (PCM) and Transmission Control Module (TCM) software, free of charge. Owner notification letters were mailed January 23, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 24S78.

23V420000 · Equipment:other:owners/service/other Manual

Jun 9, 2023

Ford Motor Company (Ford) is recalling certain 2018-2023 Expedition and Lincoln Navigator vehicles equipped with third-row seating; and 2019-2023 F-Super Duty F-250, F-350, F-450, and F-550 SuperCab vehicles. The owner's manual does not include instructions for adjusting or removing certain head restraints. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 202, "Head Restraints."

Consequence & remedy

Consequence: Without instructions, the head restraints may be improperly adjusted, increasing the risk of injury in the event of a crash.

Remedy: Ford will mail the Owner's Manual addendums that describe how to adjust and remove the head restraints for the center seating positions, free of charge. Owner notification letters were mailed July 21, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23C20.

22V250000 · Visibility:windshield Wiper/washer:linkages

Apr 14, 2022

Ford Motor Company (Ford) is recalling certain 2020-2021 F-150, Expedition, 2020-2022 Super Duty F-250, F-350, F-450, F-550, and 2020-2021 Lincoln Navigator vehicles. The windshield wiper arms may break, causing the windshield wipers to fail.

Consequence & remedy

Consequence: Inoperative windshield wipers can reduce visibility in certain driving conditions, increasing the risk of a crash.

Remedy: Dealers will replace both front windshield wiper arms, free of charge. Interim owner notification letters, informing owners of the safety risk, were mailed on May 24, 2022. Remedy parts are expected to be available 3rd Quarter 2022. Owner notification letters were mailed on October 21, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 22S26.

22V087000 · Power Train:driveline:driveshaft; Structure:frame And Members:underbody Shields

Feb 16, 2022

Ford Motor Company (Ford) is recalling certain 2017-2022 F-250 and F-350 Super Duty vehicles equipped with gasoline engines and aluminum driveshafts. Underbody heat and noise insulators may loosen and contact the aluminum driveshaft, which could damage the driveshaft and cause it to fracture.

Consequence & remedy

Consequence: A fractured driveshaft can cause a loss of drive power, or a loss of vehicle control if the driveshaft contacts the ground. Additionally, unintended movement could occur while parked if the parking brake is not engaged. Any of these scenarios can increase the risk of a crash.

Remedy: Dealers will inspect and repair the driveshaft as necessary, and properly attach the underbody insulators, free of charge. Owner notification letters were mailed on April 7, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 22S09.

Additional source detail variants (2)

Structure:frame And Members:underbody Shields

Ford Motor Company (Ford) is recalling certain 2017-2022 F-250 and F-350 Super Duty vehicles equipped with gasoline engines and aluminum driveshafts. Underbody heat and noise insulators may loosen and contact the aluminum driveshaft, which could damage the driveshaft and cause it to fracture.

Consequence: A fractured driveshaft can cause a loss of drive power, or a loss of vehicle control if the driveshaft contacts the ground. Additionally, unintended movement could occur while parked if the parking brake is not engaged. Any of these scenarios can increase the risk of a crash.

Remedy: Dealers will inspect and repair the driveshaft as necessary, and properly attach the underbody insulators, free of charge. Owner notification letters were mailed on April 7, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 22S09.

Power Train:driveline:driveshaft

Ford Motor Company (Ford) is recalling certain 2017-2022 F-250 and F-350 Super Duty vehicles equipped with gasoline engines and aluminum driveshafts. Underbody heat and noise insulators may loosen and contact the aluminum driveshaft, which could damage the driveshaft and cause it to fracture.

Consequence: A fractured driveshaft can cause a loss of drive power, or a loss of vehicle control if the driveshaft contacts the ground. Additionally, unintended movement could occur while parked if the parking brake is not engaged. Any of these scenarios can increase the risk of a crash.

Remedy: Dealers will inspect and repair the driveshaft as necessary, and properly attach the underbody insulators, free of charge. Owner notification letters were mailed on April 7, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 22S09.

22V013000 · Fuel System, Diesel

Jan 14, 2022

Ford Motor Company (Ford) is recalling certain 2021 Super Duty F-250, F-350, F-450, F-550, F-600, and Medium Duty F-650 and F-750 vehicles equipped with 6.7L diesel engines. A small void may be present in the top-center of the vehicle's underhood secondary fuel filter cap, which may progress to a pinhole over time, allowing fuel to leak from the top of the secondary fuel filter.

Consequence & remedy

Consequence: A fuel leak in the presence of an ignition source can increase the risk of a fire or injury.

Remedy: Dealers will replace the primary and secondary fuel filters, free of charge. Owner notification letters were mailed January 28, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 22S01.

21V090000 · Visibility:windshield; Visibility:windshield:critical Fasteners

Feb 18, 2021

Ford Motor Company (Ford) is recalling certain 2021 F-150 and 2020-2021 F-250, F-350, F-450, and F-550 Super Duty vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 212, "Windshield Mounting."

Consequence & remedy

Consequence: In the event of a crash, if the windshield separates from the vehicle, it can increase the risk of injury.

Remedy: Ford will notify owners, and dealers will remove and reinstall the windshield, free of charge. The recall began April 16, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C06.

Additional source detail variants (2)

Visibility:windshield:critical Fasteners

Ford Motor Company (Ford) is recalling certain 2021 F-150 and 2020-2021 F-250, F-350, F-450, and F-550 Super Duty vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 212, "Windshield Mounting."

Consequence: In the event of a crash, if the windshield separates from the vehicle, it can increase the risk of injury.

Remedy: Ford will notify owners, and dealers will remove and reinstall the windshield, free of charge. The recall began April 16, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C06.

Visibility:windshield

Ford Motor Company (Ford) is recalling certain 2021 F-150 and 2020-2021 F-250, F-350, F-450, and F-550 Super Duty vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 212, "Windshield Mounting."

Consequence: In the event of a crash, if the windshield separates from the vehicle, it can increase the risk of injury.

Remedy: Ford will notify owners, and dealers will remove and reinstall the windshield, free of charge. The recall began April 16, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C06.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

PE24014 · Sogefi Secondary Diesel Fuel Filter Leak

Opened May 9, 2024 · No close date supplied

Status: open (inferred from source dates) · Fuel System, Diesel; Fuel System, Other:fuel Filter

The Office of Defect Investigations (ODI) has received 27 complaints alleging diesel fuel leaks due to a fracture in the secondary fuel filter housing in model year (MY) 2015-2021 Ford Motor Company (Ford) F-250, 350, 450, and 550 Super Duty vehicles equipped with 6.7L diesel engines. Of these complaints, 12 describe an engine compartment fire. The proximity of the secondary fuel filter to high heat sources creates a potential for autoignition thermal events and fires. ODI has contacted the vehicle manufacturer, Ford, and the filter manufacturer, Allevard Sogefi USA (Sogefi), and learned that the low-pressure fuel system is capable of a maximum operating pressure of 8.5 Bar, while the secondary fuel filter is only tested to seven (7) Bar during the manufacturing process. Additionally, changes starting in 2022 by both Ford and Sogefi align with a lack of similar complaints on MY 2022 and newer vehicles. ODI is opening this Preliminary Evaluation (PE) to evaluate the severity of the potential problem and to fully assess the potential safety-related problems. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Additional source detail variants (2)

Fuel System, Diesel

The Office of Defect Investigations (ODI) has received 27 complaints alleging diesel fuel leaks due to a fracture in the secondary fuel filter housing in model year (MY) 2015-2021 Ford Motor Company (Ford) F-250, 350, 450, and 550 Super Duty vehicles equipped with 6.7L diesel engines. Of these complaints, 12 describe an engine compartment fire. The proximity of the secondary fuel filter to high heat sources creates a potential for autoignition thermal events and fires. ODI has contacted the vehicle manufacturer, Ford, and the filter manufacturer, Allevard Sogefi USA (Sogefi), and learned that the low-pressure fuel system is capable of a maximum operating pressure of 8.5 Bar, while the secondary fuel filter is only tested to seven (7) Bar during the manufacturing process. Additionally, changes starting in 2022 by both Ford and Sogefi align with a lack of similar complaints on MY 2022 and newer vehicles. ODI is opening this Preliminary Evaluation (PE) to evaluate the severity of the potential problem and to fully assess the potential safety-related problems. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Fuel System, Other:fuel Filter

The Office of Defect Investigations (ODI) has received 27 complaints alleging diesel fuel leaks due to a fracture in the secondary fuel filter housing in model year (MY) 2015-2021 Ford Motor Company (Ford) F-250, 350, 450, and 550 Super Duty vehicles equipped with 6.7L diesel engines. Of these complaints, 12 describe an engine compartment fire. The proximity of the secondary fuel filter to high heat sources creates a potential for autoignition thermal events and fires. ODI has contacted the vehicle manufacturer, Ford, and the filter manufacturer, Allevard Sogefi USA (Sogefi), and learned that the low-pressure fuel system is capable of a maximum operating pressure of 8.5 Bar, while the secondary fuel filter is only tested to seven (7) Bar during the manufacturing process. Additionally, changes starting in 2022 by both Ford and Sogefi align with a lack of similar complaints on MY 2022 and newer vehicles. ODI is opening this Preliminary Evaluation (PE) to evaluate the severity of the potential problem and to fully assess the potential safety-related problems. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.