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Service bulletin 25-FL-001H

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 id11012819
Published by NHTSA2025-01-13
Manufacturer's number25-FL-001H
Manufacturer's date2025-01-09
NHTSA componentFUEL/PROPULSION SYSTEM

NHTSA's summary

Some vehicles equipped with a 2.5L GDI Theta III engine (non-Turbo) may exhibit one or more misfire DTCs due to the GDI injectors leaking internally. This may be caused by internal filter breakage in the injector. Follow the procedure in this TSB to replace all 4 injectors on affected vehicles, using the kit in the Parts Information section.

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

Fuel system

Vehicles listed
HYUNDAI SANTA CRUZ2022
HYUNDAI SANTA FE2021, 2022
HYUNDAI SONATA2021, 2022, 2023
HYUNDAI TUCSON2022, 2023

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

Recalls for the same vehicles and component
20256372025-11-18. Fuel System
25V7960002025-11-17. FUEL SYSTEM, GASOLINE
23V0280002023-01-25. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
20230162023-01-23. Fuel System
20214262021-07-09. Fuel System
21V5240002021-07-09. FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
21V3080002021-05-03. FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
20210652021-02-15. Fuel System

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
26-FL-001H TSB2026-01-13. Service bulletin. Some vehicles equipped with a 2.5L GDI Theta III engine (non-Turbo) may exhibit one or more misfire DTCs due to the GDI fuel injectors leaking internally. This may be caused by internal filter breakage in the injector. Follow the procedure in this TSB to replace all 4 injectors on affected vehicles, using the kit in the Parts Information section.
25-01-010H DN2025-02-17. Service bulletin. Certain Elantra hybrid (CN7 HEV), Sonata hybrid (DN8 HEV), and Tucson hybrid (NX4 HEV) vehicles may exhibit a warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High). Follow the procedure in TSB 25-01-010H (or latest version) to perform the update the Battery management System (BMS) software.
25-01-010H TSB2025-02-17. Service campaign. This bulletin provides the procedure to update the software for the Battery Management System (BMS) on certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles that may exhibit a warning light with DTC P1BB20.
25-01-001H TSB2025-01-06. Service campaign. Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have DTC P0451 stored in the ECU. Follow this bulletin to inspect the check valve, fuel pump cover and fuel tank, and update the ECU. If necessary, replace the check valve and/or fuel tank based on inspection results. The ECU Upgrade contains a revised DTC P14EE00 which supersedes P0451.
25-01-001H DBP2025-01-06. Service campaign. Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have Diagnostic Trouble Code (DTC) P0451 (also known as DTC P14EE00) stored in the Electronic Control Unit (ECU). The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
24-01-020H DBP2024-12-03. Service campaign. Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the Electronic Control Unit (ECU). The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
24-01-020H TSB2024-12-03. Service campaign. Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have DTC P0451 stored in the ECU. Follow this bulletin to inspect the check valve, fuel pump cover and fuel tank, and update the ECU. If necessary, replace the check valve and/or fuel tank based on inspection results.
22-01-050H2022-12-07. Service bulletin. The incorrect emissions specification label located under the hood may have been installed on certain 2022MY (NXT) Santa Cruz vehicles. The existing emissions specification label will need to be inspected and if necessary, will need to be replaced with a new label with the correct emissions specifications.
22-01-050H2022-12-07. Service bulletin. This bulletin describes the procedure to inspect and if necessary, place a new emissions specification label on top of the existing label. The label is located on the underside hood panel of the vehicle. The correct label is important for future state vehicle emission inspections.
22-01-083H2022-12-07. Service bulletin. This bulletin describes the procedure to verify, and if applicable perform an Integrated Electronic Booster (IEB) software update on certain 2022-2023MY Sonata Hybrid (DN8 HEV) vehicles. This software updates the DTC monitoring logic for C240201 Motor Electrical.