WenmarOpen by Wenmar Pro

Service bulletins for the 2023 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.

57 on file from NHTSA, as of 2026-10-19.

About P0451 on the 2023 Hyundai Sonata: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

By topic

Only bulletins with trouble code: P0451 are shown. Show all

Bulletins, newest first
25-01-001H TSB2025-01-06. 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 DBP2025-01-06. 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.
9B1 OL2024-12-13. Service campaign. ELECTRICAL SYSTEM. The subject vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the ECU, which could cause the Check Engine Lamp to come on.
24-01-020H DBP2024-12-03. 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 TSB2024-12-03. 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.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.