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2021 Ford F-350 SD fuel system problems

40 complaints (41% of all complaints for this car). Typical mileage when it fails: 112,000.

owner complaints
40
of this car's complaints
41%
typical mileage
112,000
crashes
0
recalls
4

Which part fails

Owners did not name a specific part.

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Ford F-350 SD fuel system problems in other years

1995200020052010201520202025

Specific symptoms reported on the 2021 Ford F-350 SD fuel system

Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.

Fuel pump 20

Related recalls

Fuel system, diesel: delivery: fuel pumpReported March 17, 2026 · 9,839 vehicles affected
What is wrong
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.
Risk
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 on March 18, 2026.

Recall number 26V158000 · Recall details

Fuel system, gasoline: delivery: fuel pumpReported July 7, 2025 · 850,318 vehicles affected
What is wrong
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.
Risk
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.

Recall number 25V455000 · Recall details

Fuel system, diesel: delivery: fuel pumpReported December 20, 2024 · 295,449 vehicles affected
What is wrong
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.
Risk
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.

Recall number 24V957000 · Recall details

Fuel system, dieselReported January 14, 2022 · 19,697 vehicles affected
What is wrong
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.
Risk
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.

Recall number 22V013000 · Recall details

Related investigations

Sogefi Secondary Diesel Fuel Filter LeakOpened May 9, 2024, still open

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

PE24014

What 2021 Ford F-350 SD owners say

Most recent owner complaints, unedited.

Filed Oct 7, 2026 · Engine, Fuel system · MI

Failed Component & Availability for Inspection: The Bosch CP4 high-pressure fuel pump (HPFP) failed internally, shedding metallic debris throughout the entire fuel system. This matches the exact defect in the federal safety agency Recall 24V‑957 and Ford Safety Recalls 24S78 and 26S17. The failing CP4 pump and eight injectors were replaced on 03/14/2026 (Eastpointe Invoice #5997) due to contamination. The truck is located at Bob Maxey Ford in Detroit, MI, and is available for inspection alongside work orders from an authorized Ford dealership and two independent facilities. Safety Risk: The failure caused an abrupt, total loss of motive power on an active highway off-ramp, followed by an immediate no-start stall. Coasting without motive power across traffic lanes created an imminent collision hazard before the truck was towed by Troy’s Towing on 06/05/2026 (Invoice #34647). Problem Confirmation: •03/14/2026: Eastpointe replaced the failed CP4 pump and eight injectors (Inv #5997). •04/07/2026: Bill Brown Ford pulled DTC P228F, found debris on the regulator screen, and advised full fuel system replacement (RO #80302). •04/29/2026: Eastpointe confirmed metal contamination upon teardown (Inv #6342). •05/14/2026: Diesel’s Place found metal shavings on the regulator valve (Inv #2118). •Current: Bob Maxey Ford scanned DTC P0087 but reported no debris, contradicting prior documentation. Inspections: Bill Brown Ford inspected the vehicle on 04/07/2026 and documented debris. Bob Maxey Ford retrieved DTC P0087—a qualifying code for full fuel system replacement under Ford Recall 26S17—yet Ford Corporate denied coverage based on their claim of no metal shavings. Warning Signs & Timeline: In March 2026, the Check Engine Light illuminated with severe engine jerking (pump/injectors replaced 03/14). Bill Brown Ford confirmed DTC P228F and screen debris on 04/07. Metal shavings were reconfirmed on 05/14, leading to a highway stall/no-start on 06/05 and a stored DTC P0087 at Bob Maxey.

Filed Oct 2, 2026 · Fuel system · 89,545 miles · CA

The contact owns a 2021 Ford F-350 SD. The contact stated that while driving 50 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The engine seized, and the vehicle was pulled over to the shoulder of the roadway. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The vehicle was towed to the dealer, where it was diagnosed with high-pressure fuel pump failure. The contact was informed that the high-pressure fuel pump needed to be replaced. In addition, the contact was informed that a repair request had been submitted to the manufacturer; however, the request was denied. The contact was informed that the failure codes displayed were not associated with an unrepaired recall. The contact received notification of the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel). The manufacturer was contacted by phone, and a case was filed. The failure mileage was approximately 89,545.

Filed Sep 3, 2026 · Fuel system · TX

The high pressure fuel pump failed sending metal shavings through out the entire fuel system. I had no heads up and the failure left me stranded on top of a bridge. I called 911 twice and finally the cops showed up and wrecker towed me off the bridge. Ford is aware of this known issue with this make and model, and even put a recall partial recall / quick fix to increase the flow around the pump to keep it cooler. I had the quick fix recall completed but it did not prevent the failure and me being stranded on a bridge.

Filed Aug 19, 2026 · Fuel system · 30,000 miles · ID

The contact owns a 2021 Ford F-350 SD. The contact received notification of the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel). The contact stated that while driving 20 MPH, the message "Reduced Power" was displayed, and the check engine warning light was illuminated. The vehicle stalled and failed to restart. The vehicle was towed to a dealer and was diagnosed with failures of the CP4 fuel pump, cycloid filters, and contamination of the entire fuel system. The vehicle was not yet repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 30,000.

Filed Aug 6, 2026 · Fuel system · WA

Vehicle went into limp mode and we towed it to the dealership. They ran diagnostics and found that the fuel filter was causing a fault for water in the fuel filter. They replaced the fuel filter and ran diagnostics again and it flagged failure for Low pressure fuel pump. They replaced the low pressure fuel pump and reran diagnostics. When they reran diagnostics it flagged for High pressure fuel pump failure and now they are in the process of tearing it down to the point of failure to find out the cause. My vehicles vin was not included in the original recall and believe that it should have been included.

Filed Jun 11, 2026 · Fuel system · 195,000 miles · TX

The contact owns a 2021 Ford F-350. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. The vehicle was driven to the shoulder of the road, where it lost motive power. The message "Reduced Engine Power" was displayed, and the check engine warning light was illuminated. The contact stated that the failure occurred while a fifth wheel RV was hitched to the vehicle. The vehicle was towed to the dealer, where it was diagnosed that the high-pressure fuel pump had failed and needed to be replaced. The vehicle was not repaired. The contact was informed that the manufacturer denied covering the repair under the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel) due to a contaminated fuel system; however, the dealer confirmed that the fuel system was not contaminated. The dealer submitted information to the manufacturer advising that the fuel system was not contaminated. Additionally, a case was filed; however, the contact was denied coverage. The failure mileage was approximately 195,000.

Filed May 1, 2026 · Fuel system · TX

Vehicle Safety Complaint – 2021 Ford F-350 I am submitting this complaint regarding a safety-related failure involving my 2021 Ford F-350. While driving under normal conditions, the vehicle suddenly entered “limp mode,” resulting in a significant and immediate loss of power. Approximately 20 miles later, the vehicle completely shut down, leaving me stranded and requiring the truck to be towed to Gene Messer Ford for diagnosis and repair. The failure created a potentially dangerous situation, as the loss of power limited my ability to maintain safe speeds and respond to surrounding traffic conditions. After the vehicle was delivered to the dealership, it took approximately one week for inspection and an additional two weeks to complete repairs. During the repair process, I was informed that newly installed components—including the fuel rail and two fuel injectors—were defective and required replacement again. This raises concerns about whether the root cause of the failure was properly identified and whether contamination or systemic failure within the fuel system was present. I am also aware of widely reported issues involving high-pressure fuel pump (HPFP) failures in Ford diesel engines, which can result in catastrophic damage to the entire fuel system, including injectors, fuel rails, and lines. Given the nature of my vehicle’s failure and the components involved, I am concerned that this incident may be related to a broader, known defect. This type of failure—sudden loss of power followed by complete shutdown—poses a serious safety risk, particularly if it occurs at highway speeds or in high-traffic conditions. I am requesting that this complaint be reviewed as part of a broader investigation into potential fuel system defects in Ford diesel trucks. I believe this issue may warrant further scrutiny and possible recall action to prevent similar incidents.

Filed Apr 8, 2026 · Fuel system · TX

Repair remedy has not been addressed. Leaving the vehicle owners footing the bill when a fuel system problem arises. It's been since 2024 and FMC has not done anything about it. Dec 20,2024 Manufacturer Recall Number24S78 the federal safety agency Recall Number24V957 Recall StatusRecall Incomplete, remedy not yet available Summary YOUR VEHICLES HIGH-PRESSURE FUEL PUMP MAY FAIL, WHICH MAY RESULT IN EXTENDED CRANKING WITHOUT STARTING WHILE THE VEHICLE IS PARKED, ANDOR A LOSS OF MOTIVE POWER WHILE DRIVING. PRIOR TO LOSS OF MOTIVE POWER YOU MAY EXPERIENCE A CHECK ENGINE LIGHT, NOISE, ANDOR REDUCED ENGINE PERFORMANCE. Safety Risk A LOSS OF MOTIVE POWER INCREASES THE RISK OF A CRASH. Remedy PARTS AND SOFTWARE ARE NOT AVAILABLE TO REPAIR YOUR VEHICLE. FORD MOTOR COMPANY HAS AUTHORIZED YOUR DEALER TO UPDATE THE POWERTRAIN CONTROL MODULE PCM AND THE TRANSMISSION CONTROL MODULE TCM SOFTWARE, AND TO CHECK FOR THE PRESENCE OF CERTAIN DIAGNOSTICS TROUBLE CODES DTCS IN THE PCM WHICH COULD LEAD TO ADDITIONAL DIAGNOSTICS, FREE OF CHARGE. Manufacturer's Notes IF YOU HAVE ANY QUESTIONS REGARDING THIS RECALL, OR BELIEVE ANY OF THIS INFORMATION IS INACCURATE, PLEASE CONTACT FORD DIRECTLY AT 800‑392‑3673 OR LINCOLN AT 800‑521‑4140. If the manufacturer has failed or is unable to remedy this safety recall for your vehicle in a timely manner, please contact the federal safety agency Vehicle Safety Hotline at: 1‑888‑327‑4236 or TTY: 1‑888‑275‑9171 or file an online complaint with the federal safety agency.

Filed Mar 12, 2026 · Fuel system · UT

The contact owns a 2021 Ford F-350. The contact received notification of the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel). The contact recently set an appointment with a local dealer for the software update, but was informed by the dealer that the recall had been placed on hold. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not informed. The contact had not experienced a failure.

Filed Feb 23, 2026 · Fuel system · 125,000 miles · IN

The contact owns a 2021 Ford F-350. The contact stated that while driving approximately 65 MPH, the vehicle lost automotive power. The low power mode warning light was illuminated. The contact received notification of the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel); however, the part to do the recall repair was not yet available. The vehicle was taken to a dealer, where it was diagnosed, and determined that a software update was needed; however, the software update was not available. The vehicle was not repaired. 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 and stated that there was no estimate for when the remedy would be available. The failure mileage was approximately 125,000.

Questions about the 2021 Ford F-350 SD fuel system

Does the 2021 Ford F-350 SD have fuel system problems?

Owners have filed 40 complaints about the fuel system of the 2021 Ford F-350 SD, 41% of all its complaints, more than any other problem.

At what mileage do 2021 Ford F-350 SD fuel system problems start?

The typical (median) mileage in owner complaints is 112,000 miles.

Was there a recall on the 2021 Ford F-350 SD fuel system?

Yes, 4 recalls: 26V158000, 25V455000, 24V957000. Check your VIN to see if your car still needs the free repair.

What year does the Ford F-350 SD have the most fuel system problems?

The Ford F-350 SD model years with the most fuel system complaints are 2020 (48 complaints), 2017 (40 complaints) and 2021 (40 complaints).

Other 2021 Ford F-350 SD problems

Engine 16Electrical 13Transmission 10Visibility 7Driver assistance 6Suspension 5Brakes 4Locks 4Steering 4Acceleration 3Body 3Seats 1Tires 1

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