Service bulletins for the 2021 Hyundai Ioniq
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.
33 on file from NHTSA, as of 2026-10-19.
About U1341 on the 2021 Hyundai Ioniq: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: U1341 are shown. Show all
| 24-EV-001H | 2024-04-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides the procedure to update the ECU software on certain 2021-2022MY IONIQ Plug-in Hybrid (AE PHEV) vehicles that may exhibit a warning light with DTC U1341 due to communication issues with the Integrated Electronic Brake (IEB) during charging in IG3 mode. Follow the procedure in this TSB to update the ECU software logic. • DTC Info: U1341 - ECU-IEB Communication Delay |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.