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Service bulletin 21L04

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10213730
Published by NHTSA2022-06-10
Manufacturer's number21L04
Manufacturer's date2022-06-08
NHTSA componentENGINE; EQUIPMENT:OTHER:LABELS; FUEL SYSTEM, GASOLINE

NHTSA's summary

Certain 2020-2021 Model Year Transit Vehicles Equipped with a 3.5L Ecoboost Engine - Fuel Filler Door E85 Label Removal .In all of the affected vehicles, the fuel tank filler door may incorrectly have an E85 fuel label installed on units that are not rated for E85 fuel. The use of E85 fuel in vehicles not rated for E85 fuel may cause a lean condition along with a Malfunction Indicator Lamp (MIL) and a P0172 Diagnostic Trouble Code (DTC). Continued driving with E85 fuel may lead to drivability symptoms including hard to start, rough idle, stalling, hesitation, surging, or lack of power.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Equipment and accessories, Fuel system, Labels and manuals

Trouble codes named

P0172

Vehicles listed
FORD TRANSIT2020, 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
25V8760002025-12-17. EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR:
23V4990002023-07-19. FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
20233282023-06-05. Accessories

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SSM 543632025-11-13. Service bulletin. Some 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 hybrid)/6.8L/7.3L engine and 2021-2026 E-Series may exhibit a rattle/scraping noise from the bellhousing area on start-up. Workshop Manual (WSM), Section 303-00 Engine System - General Information > Diagnosis and Testing and 303-06 > Starting System has been updated to address this condition. Additionally, WSM, Section 303-01 > Removal and Installation > Engine to Transmission Spacer Plate has been added to address this condition. Refer to the revised WSM sections for normal diagnosis.
SSM 542692025-10-08. Service bulletin. Some 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 (non-hybrid), 3.5L Cyclone, 6.8L or 7.3L engine, may exhibit a rattle/scraping noise from the bellhousing area on start-up. Workshop Manual (WSM), Section 303-00 Engine System - General Information > Diagnosis and Testing and 303-06 > Starting System has been updated. Additionally, WSM, Section 303-01 > Removal and Installation > Engine to Transmission Spacer Plate has been added to address this condition. Refer to the revised WSM sections for normal diagnosis.
TSB 25-23632025-08-07. Service bulletin. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: * Lack of air flow from inoperative blower motor * Open or damaged fuse F10 in the BJB This may be due to a damaged fuse F10 (40A) in the battery junction box (BJB). ** Model secton: all gas engine (non-BEV) ***** Legacy verbiage - will be removed after completing approvals ***** Some 2020-2024 Transit all gas engine (non-BEV) vehicles may exhibit a lack of air flow due to an inoperative heating, ventilation, and air conditioning (HVAC) blower motor. This may be due to a damaged fuse F10 (40A) in the battery junction box (BJB). To correct the condition, replace the fuse F10 (position 7 in the BJB). Replace the BJB and BJB harness only if it is required with the listed service replacement part.
SSM 537642025-05-21. Service bulletin. Some 2020 Continental, 2020-2024 Edge/Nautilus, 2020-2025 Explorer/Aviator/Escape/Corsair/F-150/F-Super Duty/Ranger/Transit/E-Series, 2021-2025 Bronco, and 2022-2025 Maverick vehicles may require an engine cooling system flush to be performed for various concerns. Workshop Manual (WSM), Section 303-03 has been updated to eliminate the need to remove and install the radiator assembly to perform a radiator flush.
SSM 524762024-05-03. Service bulletin. All accessory stick-on keyless entry keypads come with a wallet card containing the master code. If the accessory keypad was factory installed, this card will be placed in the glove box and should be handed to the vehicles owner during initial delivery. Unlike the integrated (wired) factory keypad, the accessory keypad master code cannot be retrieved from the vehicle using a diagnostic scan tool. If the wallet card for an accessory keypad is lost, follow these steps to recover the code. Dealer Key Code access is granted through the Dealer Program Enrollment System (DPES); dealership management can authorize users. The authorized user must go to FMCDealer.com > Parts and Service > Parts Product Line Information > Keys/Entry Devices > Aftermarket Keyless Entry Keypad Code Access. Follow the instructions on the screen to obtain the master code for the accessory keypad.
SSM 523352024-03-20. Service bulletin. For 2015-2024 Ford and Lincoln vehicles equipped with turbocharged engines and customer concern of an engine oil leak, refer to Workshop Manual (WSM), Section 303-00 for oil leak inspection and testing methods. Ford has evaluated turbochargers replaced for oil leak symptoms and although oil may collect on the external surface of a turbocharger, it is extremely rare for a turbocharger assembly to be the root cause of the oil leak. Careful inspection of the turbocharger oil feed and drain tubes should be performed along with the recommended WSM procedures as needed. Warranty claims for turbocharger replacement going forward will be assessed.
SAN-Vol1 I12023-08-16. Service bulletin. The Service Awareness Newsletter is an informal communication that contains information that may not be presently available in a TSB, SSM, GSB, or other electronic communication. This article includes information on warranty, technical service tips and other service information.
SSM 516872023-06-16. Service bulletin. TSB 22-2428 is missing some labor operations. For any missing labor operations, claim available new model labor operations or m-time. Refer to this article on the repair order. When replacing the CDF cylinder, the current TSB does not require a complete transmission overhaul or cooler and converter flushing. Ford is currently reviewing the TSB. Monitor OASIS for updates.
22B402023-05-02. Service bulletin. Certain 2021 Model Year Single Rear Wheel Transit Vehicles Equipped with Aluminum Alloy Wheels Incorrect Color Wheels Installed
SSM 514492023-04-05. Service bulletin. Some 2020-2023 Ford and Lincoln SYNC3 equipped vehicles may experience an inaccurate notification in the FordPass®/LincolnWay® app indicating Vehicle Has Entered Deep Sleep Mode. Vehicle Has Entered Deep Sleep Mode message is expected if the vehicle has not been started for 14 consecutive days, battery voltage is at/below 9.5 volts or the body control module (BCM) 12 volt battery state of charge (SoC) drops below 50%. If the vehicle is going into deep sleep outside these conditions, this may be due to the telematics control unit (TCU) software. To correct this condition, follow the Service Procedure to update the TCU to the latest software. For claiming, use causal part 14G229 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.