2021 Ford F-250 Sd

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.

I have a 2021 Ford F250, the truck was bought new has 34,467 miles on .Oil changes every 5000 miles. Was returning home from camping and engine developed a miss, engine light came on,I was able to make it home and engine developed a loud ticking noise in the upper part of the engine. Truck was towed to a Ford dealer ,where it sits for the past 2 weeks ,waiting on Ford to decide what they are going to do with it. Dealer told me ,after a tear down ,that Ford wanted ,that it was the cam and lifters. This is a known problem ,and Ford dropped the ball on a recall on this engine. Besides the cam ,lifter issue ,there is an oil pump problem with this year engine. I bought the truck as a retirement gift to myself, and now appears to be the worse decision I've made. I believe Ford needs to replace the engine and not just fix the cam and lifters as small metal particles will be through out the engine due to the above failures and will cause a failure again.

NHTSA ID

11775675

Incident

Oct 18, 2026

Leak in upper fuel filter. The part is plastic and fumes are getting in can of truck and fuel on engine.

NHTSA ID

11775195

Incident

Nov 2, 2026

The contact owns a 2021 Ford F-250 SD. The contact stated that while attempting to stop the vehicle, the vehicle lost automotive power. The message "Place Vehicle in Park and Restart" was displayed. The vehicle was restarted and the contact was able to continue driving. The manufacturer was notified of the failure. The failure mileage was 25,000.

NHTSA ID

11775161

Incident

Nov 1, 2026

Mileage

25,000 mi

The contact owns a 2021 Ford F-250 SD. The contact stated that water was entering the cabin of the vehicle through the front windshield, causing several electrical failures across the dashboard. The contact associated NHTSA Campaign Number: 21V090000 (Visibility) with the failure; however, the dealer and the manufacturer confirmed that the vehicle was not included in the recall. The failure mileage was 94,174.

NHTSA ID

11774633

Incident

Oct 23, 2026

Mileage

94,174 mi

The contact owns a 2021 Ford F-250 SD. The contact stated that while idling and while driving, the engine was running rough and the engine power was reduced. The contact associated the failure with NHTSA Campaign Number: 25V455000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The failure mileage was approximately 77,000.

NHTSA ID

11772697

Incident

Sep 21, 2026

Mileage

77,000 mi

The contact owns a 2021 Ford F-250 SD. The contact stated that while driving at an undisclosed speed, the vehicle unexpectedly hesitated. The contact received notification of NHTSA Campaign Number: 25V455000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The dealer was contacted. The vehicle was not diagnosed or repaired. The dealer confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The approximate failure mileage was 35,000.

NHTSA ID

11768308

Incident

Oct 1, 2026

Mileage

35,000 mi

My 2021 Ford F250 super duty pickup truck experienced a catastrophic failure of the Bosch CP4 high pressure fuel pump. This has been confirmed by the dealer's service center. As a result of this part failure, metal shards were introduced into the entire fuel system. This now requires the fuel pump and the entire fuel system (every component) to be replaced. My truck has 74,9xx miles. This is a known and well publicized issue. Rather than recall the high pressure fuel pump, Ford instead issued a recall (24S78) to reflash the PCM software with the intent to reduce the risk of the fuel pump failure. I had the 24S78 recall work completed, and my fuel pump failed still. No indication in advance of this failure.

NHTSA ID

11767129

Incident

Sep 22, 2026

Purchased a 2021 F250 brand new from dealership and have had serviced at dealer since new. This truck is equipt with the 10r140 transmission that is a known problem. Starting at 48K miles transmission slipped from 3-5 gear. Report to Mooresville Ford and they “drove” the truck 6 miles and stated they could not recreate the slip. Reported again to Mooresville Ford at ~78k, technician drove vehicle for 12 miles and documented a slight slip between 3-5 but Ford declined to take action and extended warranty to 100k. Reported again at ~96k to Mooresville Ford, dealership held truck for 8 days and drove 6 miles. Declined again to take action and extended warranty to 146k. Reported again to Mooresville Ford at 143k to which they declined action and stated: “without the engine throwing a code they would not cover the truck under warranty.” Had recall 24S78 POWERTRAIN CONTROL MODULE AND TRANSMISSION CONTROL MODULE REPROGRAMMING completed May of 2026 with ~155k. One month after this recall had been completed, a hard down shift from 8-7 and 5-3 started to occur. Reported to Mooresville Ford and they declined to take action and stated Ford would not cover. Down shifting is sudden and harsh and will cause harm to others of truck locks up on road. Someone needs to hold Ford accountable for these bad transmissions. Quote to replace came in at 10k which I am holding out hope a recall comes before I am forced to replace. PLEASE HELP! All service records are on file and can be provided to confirm claims.

NHTSA ID

11766798

Incident

Jun 10, 2026

Customer Satisfaction Program 25M01--Owner Letter 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 Replacement, If Required After Dealer Evaluation Reference: Emissions Recalls 22E02, 22E04, 23E01, and 25E09

For 20202026 vehicles equipped with the 10R140 transmission, a new Transmission Clutch Circuit Leak Test has been introduced in the Ford Diagnosis and Repair System (FDRS). This test utilizes the pressure and vacuum transducer (PVT) when available. Workshop Manual (WSM) updates related to this diagnostic procedure are planned for release in Q4 2026. The new test improves the accuracy of detecting leaks within transmission fluid circuits and replaces the previous air check method. The previous air check procedure has been shown to produce a high rate of false positives, which may lead to unnecessary repairs when no actual leak is present. Accordingly, the air check procedure is not to be used for diagnosing internal transmission hydraulic leaks or as justification for transmission replacement.

This bulletin supersedes 24-2249. Reason for update: update the claim quantity of the torque converter nuts, part number and claim quantity of the front support assembly bolt washers, and part number change of the fluid pan from the Parts List. Reissued 01-Oct-2026 - Added LC3Z-7G091-B to the part list

Customer 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 Replacement, If Required After Dealer Evaluation Reference: Emissions Recalls 22E02, 22E04, 23E01, and 25E09

This 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 as these bolts are in kit LC3Z-6781-A, update the claim quantity of the part number W709771-S440 to 9 pieces (F-650/F750-Engine Replacement), W706447-S437 and W715068-S437 to 4 pieces, W712861-S439 to 8 pieces(F-Super Duty Pickup And Chassis Cab-Engine Replacement) / 8 pieces (F-53 Motorhome/F-59 Stripped Chassis Cab/F-650,F750 Engine Replacement) / W714286-S442 to 4 pieces (F-Super Duty Pickup And Chassis Cab-Camshaft and Tappet Repair / F-Super Duty Pickup And Chassis Cab-Engine Replacement), include LC3Z-6020-A for the Engine replacement lists, include 1 fuel injector seal kit to the Camshaft and Tappet repair lists, include 4 pieces of W520114-S440 to the E Series-Camshaft and Tappet Repair list, and update the engine oil part numbers XO-5W30-Q1SP and CXO-5W30-LSP6. Some of the vehicles listed in the Model statement above may exhibit an upper engine ticking or tapping noise at idle. Customers may also report experiencing ro

This bulletin supersedes 25-2549. Reason for update: To add 2020 model year chassis cab vehicles. Some of the vehicles listed in the Model statement above may exhibit an incorrectly illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P0420 and/or P0430 stored in the powertrain control module (PCM). This may be due to the software in the PCM. This condition does not affect vehicle drivability or durability.