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. Its meaning is in the manufacturer's service information.
| TSBELE147 | 2018-06-25. Service bulletin. 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. |
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| PS292 | 2017-08-02. Service bulletin. 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. |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.