P1BB2 on the 2023 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.
| TSB_SC338_R1 | 2025-09-03. Emissions. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC338) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to upgrade the Battery Management System ‘BMS’ software logic on certain 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to December 15, 2023, and 2023MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through April 25, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery. If the 12V Lithium battery becomes overcharged, the subject vehicles may experience a reduction in motive power accompanied by the ‘Check Hybrid System, Stop Safely’ warning message, Hybrid system warning lamp, Service warning lamp, Charging system warning lamp, and a rapid beeping sound for approximately ten (10) seconds. (Note: This Voluntary Emissions Service Campaign supersedes SC335). |
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| SC338_TSB | 2025-07-01. Service bulletin. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC338) - This bulletin provides information to upgrade the Battery Management System ‘BMS’ software logic on certain 2023MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, and 2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery. |
| SC335_TSB_CLSD | 2025-07-01. Service bulletin. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC335) CLOSED AND SUPERSEDED TO SC338 (TSB) - This bulletin is now closed. "This bulletin provided information to upgrade the Battery Management System ‘BMS’ software logic on certain 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, and2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery. |
| SC335_TSB | 2025-02-26. Service bulletin. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC335) - This bulletin provides information to upgrade the Battery Management System ‘BMS’ software logic on certain 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, and 2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery. If the 12V Lithium battery becomes overcharged, the subject vehicles may experience a reduction in motive power accompanied by the ‘Check Hybrid System, Stop Safely’ warning message, Hybrid system warning lamp, Service warning lamp, Charging system warning lamp, and a rapid beeping sound for approximately ten (10) seconds. (Note: This Voluntary Service Campaign supersedes ELE318/SA553). |
| TSB_ELE318 | 2023-12-05. Service bulletin. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: BMS SOFTWARE LOGIC IMPROVEMENT FOR DTC P1BB2 (SA553) - This bulletin provides information to upgrade the Battery Management System (BMS) software logic on certain 2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023, and 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, which may exhibit a “Check Hybrid System” message displayed on the instrument cluster with DTC P1BB2 stored. This condition may occur when the vehicle is exposed to high heat/hot weather environments. |
5 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.