# P1BB2 on the 2021 Hyundai Elantra

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name P1BB2

- [11020798](https://open.wenmarpro.com/bulletins/11020798), 2025-07-22: 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.