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2020 Ford F-350 SD fuel system problems

48 complaints (25% of all complaints for this car). Typical mileage when it fails: 124,000.

owner complaints
48
of this car's complaints
25%
typical mileage
124,000
crashes
0
recalls
2

Which part fails

  • Delivery: fuel pump
    2

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 2020 Ford F-350 SD fuel system

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

Fuel pump 19

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, 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

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 2020 Ford F-350 SD owners say

Most recent owner complaints, unedited.

Filed Aug 26, 2026 · Fuel system · 230,000 miles · GA

The contact owns a 2020 Ford F-350 SD. The contact stated that while attempting to start the vehicle with the ignition key, the vehicle failed to start as intended. The check engine warning light was illuminated. In addition, the contact associated the failure with the federal safety agency Campaign: 24V957000 (Fuel System, Diesel); and the VIN was included. The vehicle was towed to a local dealer where it was diagnosed with the fuel pump failure. The vehicle was not repaired under the federal safety agency Campaign Number: 24V957000(Fuel System, Diesel); because there was no metallic debris found in the fuel system. The manufacturer was made aware of the failure, and the recall repair was denied. The failure mileage was approximately 230,000.

Filed Aug 20, 2026 · Fuel system, Transmission · VA

Vehicle extended cranking without starting while the vehicle is parked, and once started it was loss of motive power while driving and almost was in accident because of this. Sheehy ford see its a recall and see its exactly what the recall is stating but refusing to fix it and want to charge almost 10k to do so.

Filed Jul 28, 2026 · Fuel system · MI

1. High Pressure Fuel Pump 2. All safety is good 3. It has been taken to the dealership and blaming it on the water separator (water/rust in fuel) The codes thrown are towards the High Pressure Fuel Pump 4. No there were no warning lights or messages prior to the failure. 5. Dealership did not provide the inspection report

Filed Jul 28, 2026 · Fuel system · 180,000 miles · MI

The contact owns a 2020 Ford F-350. The contact stated that while driving 65 MPH and towing a dump trailer, the vehicle entered LIMP Mode. The contact was able to pull over to the side of the road. The vehicle was towed to the contact's storage yard, where an independent diesel mechanic performed a diagnostic scan and retrieved diagnostic trouble codes indicating a fuel system failure. The vehicle was towed to a dealer, where it was disassembled and diagnosed with a CP4 pump failure resulting from a water separator failure. The contact was informed that the CP4 pump replacement was not covered and needed to be replaced at the owner's expense. The manufacturer was notified of the failure and contacted the dealer, but no further assistance or information was available. The vehicle was not repaired. The failure mileage was approximately 180,000.

Filed Jun 2, 2026 · Fuel system · AK

The contact owns a 2020 Ford F-350. The contact received a 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 local dealers were contacted; however, the parts were on back order until late September. Another local dealer was contacted (Kendall Ford of Anchorage|1950 Gambell St, Anchorage, AK 99501); however, the distance was far to great in a remote area. 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.

Filed May 21, 2026 · Engine, Fuel system · 126,136 miles · NY

The contact owns a 2020 FORD F-350. The contact stated while driving at an undisclosed speed, he had a loss of motive power and check engine warning light was illuminated when driving, almost causing an accident due to not being able to accelerate. The vehicle was taken to a dealer where it was diagnosed to have metal shavings in the combustion system. The contact received notification of the federal safety agency Campaign Number: 24V957000 (FUEL SYSTEM, DIESEL); however, the SSSC (Special Service Center assistance request) was declined by Ford agency (SSSC), due to the issue not having metal shavings although the dealer technician stated there were shavings. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 126,136.

Filed May 8, 2026 · Engine, Fuel system · FL

The component/system that failed or malfunctioned is the SCR (Selective Catalytic Reduction) NOx Catalyst Efficiency system, triggering DTC P20EE – SCR NOx Catalyst Efficiency Below Threshold (Bank 1). This issue began immediately after Ford Recall 24S78 (PCM software update) was performed on April 29, 2026 at Ferman Ford of Countryside. The truck had zero emissions or check-engine issues prior to the recall flash and was perfectly maintained to Ford standards with Howes diesel treatment every tank. The problem has been reproduced and confirmed multiple times by the dealer: After the May 4 PCM reprogram per TSB 21-2248 After replacement of both NOx sensors on May 5 (code returned in under 17 miles) After replacement of the DEF injector (code returned again) The dealer only performed one manual DPF regeneration instead of the two required by Ford SSM 49202 and pinpoint test RD15, and they did not complete the SCR Parameter Reset. They are now quoting an additional ~$2,000 out-of-pocket for a DPF replacement after partial goodwill assistance was approved. The vehicle has been repeatedly inspected and repaired by Ferman Ford. No independent inspection yet. Ford Customer Service has been contacted and partial goodwill was approved, but significant out-of-pocket costs remain. Warning lamps/messages (Service Engine Soon light + “exhaust emission control system is not operating as expected”) first appeared immediately after the April 29 recall PCM flash and have continued ever since. Safety risk: A loss of motive power, entry into limp mode, or reduced power while driving could result in a crash or inability to maintain highway speed. This appears to be a direct consequence of the Recall 24S78 PCM software update tightening emissions monitoring. All repair orders, photos of warnings, and supporting documents are attached for your review. There is 12. I was not able to upload the last of the documents.

Filed Apr 7, 2026 · Driver assistance, Fuel system · CA

The contact owns a 2020 Ford F-350. The contact received notifications of the federal safety agency Campaign Numbers: 24V957000 (Fuel System, Diesel), 25V626000 (Steering), and 25V686000 (Back Over Prevention); however, the parts for two of the recall repairs were not yet available. The local dealer was made aware of the recalls and confirmed that parts for two of the recalls were not yet available; however, parts for the steering column recall were available. The vehicle was taken to the dealer, where it remained for two months. The contact was then informed that parts to repair the vehicle were unavailable, and the contact was informed to retrieve the vehicle. 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 provided the same information as the dealer. The contact had not experienced a failure.

Filed Apr 6, 2026 · Fuel system · NJ

The contact owns a 2020 Ford F-350. 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 local dealer was contacted, and it was confirmed that part was not yet available. 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 the failure.

Filed Mar 2, 2026 · Fuel system · 270,000 miles · GA

The contact owns a 2020 Ford F-350. The contact stated that while driving at 70 MPH, the vehicle went into LIMP Mode and unintendedly decelerated and shut off. The vehicle was towed to the residence, and a dealer was contacted. The contact associated the failure with the federal safety agency Campaign Number: 24V957000 (FUEL SYSTEM, DIESEL). The vehicle was towed to the dealer, and the contact was informed that the CP4 high-pressure fuel pump needed to be replaced. The engine was repaired, and the vehicle was repaired. The manufacturer was notified of the failure and informed the contact that the recall was on pause. The failure mileage was 270,000.

Questions about the 2020 Ford F-350 SD fuel system

Does the 2020 Ford F-350 SD have fuel system problems?

Owners have filed 48 complaints about the fuel system of the 2020 Ford F-350 SD, 25% of all its complaints.

At what mileage do 2020 Ford F-350 SD fuel system problems start?

The typical (median) mileage in owner complaints is 124,000 miles.

Was there a recall on the 2020 Ford F-350 SD fuel system?

Yes, 2 recalls: 26V158000, 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 2020 Ford F-350 SD problems

Transmission 54Steering 35Engine 14Body 12Electrical 11Suspension 11Driver assistance 9Visibility 8Brakes 7Lights 5Locks 4Wheels 3Acceleration 2

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