# P1B70 on the 2011 Kia Optima

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 P1B70

- [10142244](https://open.wenmarpro.com/bulletins/10142244), 2018-06-25: TSB \- BMS LOGIC IMPROVEMENT FOR DTC P1B70 \- This bulletin provides the procedure to improve the logic of the Battery Management System \(BMS\) on some 2011\-2016MY Optima Hybrid \(TF HEV\) vehicles, produced from February 15, 2011 through July 22, 2015, which may experience a malfunction indicator light \(MIL\) illumination with DTC P1B70 even though there is no actual malfunction.
- [10109653](https://open.wenmarpro.com/bulletins/10109653), 2017-08-02: PIT STOP: DTC P1B70/P1B74/ P1B96 \- HIGH VOLTAGE BATTERY SENSOR CIRCUIT FAULT \- When addressing a customer complaint related to a battery warning lamp illuminated in the dash and drivability issues, access GDS to check for any active DTC\(s\). Also, review the BMS \> Current Data to inspect for one or more HEV battery cells showing one \(1\) volt, or more, lower than the than rest of the cells.