Service bulletins for the 2021 Hyundai Sonata
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.
109 on file from NHTSA, as of 2026-10-19.
About P14EE on the 2021 Hyundai Sonata: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P14EE are shown. Show all
| 25-01-001H TSB | 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. |
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| 25-01-001H DBP | 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.