P1B77 on the 2018 Kia Niro
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.
| TSBELE185 | 2019-09-06. Service bulletin. TSBELE185: SERVICE ACTION: DE HEV BMS DTC (P1B77) JUDGEMENT LOGIC IMPROVEMENT (SA393) - This bulletin provides the procedure to improve the logic of the Body Control Module (BCM) on some Niro (DE HEV) vehicles, produced from July 9, 2018 through January 28, 2019, which may experience a BMS MIL ON DTC P1B77. |
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1 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.