# 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.

- Type: Service bulletin
- NHTSA id: 11012819
- Published by NHTSA: 2025\-01\-13
- Manufacturer's number: 25\-FL\-001H
- Manufacturer's date: 2025\-01\-09
- NHTSA component: FUEL/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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11012819-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11012819-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Fuel system

## Vehicles listed

- 2022 HYUNDAI SANTA CRUZ
- 2021 to 2022 HYUNDAI SANTA FE
- 2021 to 2023 HYUNDAI SONATA
- 2022 to 2023 HYUNDAI TUCSON

## Recalls for the same vehicles and component

- [2025637](/recalls/tc/2025637.md), 2025-11-18: Fuel System
- [25V796000](/recalls/nhtsa/25V796000.md), 2025-11-17: FUEL SYSTEM, GASOLINE
- [23V028000](/recalls/nhtsa/23V028000.md), 2023-01-25: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
- [2023016](/recalls/tc/2023016.md), 2023-01-23: Fuel System
- [2021426](/recalls/tc/2021426.md), 2021-07-09: Fuel System
- [21V524000](/recalls/nhtsa/21V524000.md), 2021-07-09: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
- [21V308000](/recalls/nhtsa/21V308000.md), 2021-05-03: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
- [2021065](/recalls/tc/2021065.md), 2021-02-15: Fuel System

## Other bulletins for the same vehicles and component

- [26\-FL\-001H TSB](/bulletins/11027589.md), 2026-01-13, Service bulletin: FUEL/PROPULSION SYSTEM. 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 DN](/bulletins/11014286.md), 2025-02-17, Service bulletin: FUEL/PROPULSION SYSTEM. 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 TSB](/bulletins/11014285.md), 2025-02-17, Service campaign: FUEL/PROPULSION SYSTEM. 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 TSB](/bulletins/11012362.md), 2025-01-06, Service campaign: FUEL/PROPULSION SYSTEM. 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 DBP](/bulletins/11012361.md), 2025-01-06, Service campaign: FUEL/PROPULSION SYSTEM. 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 DBP](/bulletins/11010975.md), 2024-12-03, Service campaign: FUEL/PROPULSION SYSTEM. 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 TSB](/bulletins/11010974.md), 2024-12-03, Service campaign: FUEL/PROPULSION SYSTEM. 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\-050H](/bulletins/10227326.md), 2022-12-07, Service bulletin: FUEL SYSTEM, GASOLINE; EQUIPMENT:OTHER:LABELS. 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\-050H](/bulletins/10227325.md), 2022-12-07, Service bulletin: FUEL SYSTEM, GASOLINE; EQUIPMENT:OTHER:LABELS. 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\-083H](/bulletins/10227321.md), 2022-12-07, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; ELECTRICAL SYSTEM:SOFTWARE. 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.

JSON: [/v1/bulletins/11012819](/v1/bulletins/11012819)

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