Service bulletins for the 2020 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.
124 on file from NHTSA, as of 2026-10-19.
About P1BB2 on the 2020 Hyundai Sonata: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P1BB2 are shown. Show all
| 25-01-010H-1 TSB | 2025-07-22. Service campaign. ELECTRICAL SYSTEM. This bulletin provides the procedure to update the software for the Battery Management System (BMS) on certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles that may exhibit a warning light with DTC P1BB200 and enter Limp Mode. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.