# P1B77 on the 2019 Hyundai Ioniq

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 P1B77

- [10165461](https://open.wenmarpro.com/bulletins/10165461), 2019-09-30: This service campaign provides information related to a BMS software update to the diagnostic logic for DTC P1B77 ? ?High Voltage Battery Pre\-charging Fault?.
- [10165457](https://open.wenmarpro.com/bulletins/10165457), 2019-09-30: This bulletin provides information related to a BMS \(Battery Management System\) software update to the diagnostic logic for DTC P1B77 ? ?High Voltage Battery Precharging Fault?.