P1B77

P1B77

DTC P1B77, sometimes indicated as P1B7700 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the transmission (gearbox) causing p1b77.


    DTC Trouble Code Search
    Bulletins

    Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

    • Campaign T3U Dea - EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
      HYUNDAI: This service campaign provides information related to a bms software update to the diagnostic logic for dtc P1B77 ? ?High voltage battery pre-charging fault?.
    • 19-01-023H - ELECTRICAL SYSTEM:12V/24V/48V BATTERY
      HYUNDAI: 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?.
    • TSBELE185 - ELECTRICAL SYSTEM
      KIA: 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 th
    • PS515_R2 - ELECTRICAL SYSTEM
      KIA: Pitstop: dtc P1B25/P1B77 ? 125 amp hv fuse inspection - this bulletin has been revised to include additional information. When addressing a concern related to the 2011-2016my optima hybrid (tf hev) high voltage (hv) warning light on and kds
    • PS553-R1 - ELECTRICAL SYSTEM
      KIA: Pitstop - hev warning light and dtc P1B25/P1B77 - this bulletin has been revised to include additional information. When addressing a concern related to the niro hv warning light on, and kds detects a primary dtc P1B25 (hv path fault) and s
    • PS553 - ELECTRICAL SYSTEM:12V/24V/48V BATTERY
      KIA: Pitstop - hev warning light and dtc P1B25/P1B77 - when addressing a concern related to the niro hv warning light on, and kds detects a primary dtc P1B25 (hv path fault) and secondary dtc P1B77 (hv pre-charge fault), then the 125 amp high vo
    • PS491 - ELECTRICAL SYSTEM:12V/24V/48V BATTERY
      KIA: Pitstop: voltage protection device (vpd) dtcs P1BA7 and P1B77 - the voltage protection device (vpd) (1) is mounted on top of the hv battery pack. If the hv battery overcharges, the battery cells/modules/case can swell. If swelling occurs, t
    Consumer Complaints for this DTC



    2013 KIA OPTIMA

    The hybrid vehicle was being driven on a 3-lane state highway and came to rest in the middle lane behind 4 vehicles when the dtc P1B25/P1B77 ' 125 amp hv fuse was blown. This caused a safety hazard to many oncoming vehicles and the vehicle locked up. Other reports found online seem consistent with ps515 (rev 2, 02/28/2019) and have reported to stop and become unresponsive while driving.
    ELECTRICAL SYSTEM, ENGINE UNKNOWN OR OTHER

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