HYUNDAI
25-01-001H TSB
Manufacturer communications
- Publication date
- 2025-01-03
- Received by NHTSA
- 2025-01-06
- NHTSA record numbers
- 11012362
Manufacturer summary
Original wording in English
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.
Reported code forms
Check vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.