{"nhtsa_id":11012362,"type":"service_campaign","type_name":"Service campaign","date_added":"2025-01-06","date":"2025-01-03","document_id":"25-01-001H TSB","mfr_campaign":"25-01-001H","replaces":null,"component":"FUEL/PROPULSION SYSTEM","mfr_system":null,"summary":"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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11012362-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11012362-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11012362","components":[{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":["P0451","P14EE"],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"SONATA","year_from":2020,"year_to":2023,"match":"exact","vehicle_ids":["2020_hyundai_sonata","2021_hyundai_sonata","2022_hyundai_sonata","2023_hyundai_sonata"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}