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P0B28 · Manufacturer communications

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

P0B28 ← What does this code mean?

14 Results

08-072-26 REV. A ↗

JEEP · 2026-04-22

High Voltage Battery Pack Replacement XU1 Warranty Extension Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0BBE-00 - Hybrid Battery Pack Voltage Variation. ● P1C5E-00 - Battery State Of Health Failed. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P0B28-00 - Hybrid/EV Battery "B" Voltage Unstable. NOTE: ● Any warranty qualifying issues outside of these specific DTCs will continue to be covered per the HV battery standard warranty coverage. ● Battery packs may contain cells with separator damage. Customers may comment on the following: ● “Service Charging System” message displayed in the Instrument Panel…

08-072-26 ↗

JEEP · 2026-02-18

High Voltage Battery Pack Replacement XU1 Warranty Extension Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0BBE-00 - Hybrid Battery Pack Voltage Variation. ● P1C5E-00 - Battery State Of Health Failed. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P0B28-00 - Hybrid/EV Battery "B" Voltage Unstable. NOTE: ● Any warranty qualifying issues outside of these specific DTCs will continue to be covered per the HV battery standard warranty coverage. ● Battery packs may contain cells with separator damage. Customers may comment on the following: ● “Service Charging System” message displayed in the Instrument…

08-068-26 ↗

JEEP · 2026-02-13

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0607-00 - ECU Internal Performance. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High.** ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0D0F-00 - Hybrid/ EV Battery Negative Contactor “A” Stuck Closed. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck…

08-065-26 ↗

JEEP · 2026-02-12

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0607-00 - ECU Internal Performance. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High.** ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0D0F-00 - Hybrid/ EV Battery Negative Contactor “A” Stuck Closed. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck…

08-064-26 ↗

JEEP · 2026-02-12

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0607-00 - ECU Internal Performance. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High.** ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0D0F-00 - Hybrid/ EV Battery Negative Contactor “A” Stuck Closed. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck…

08-063-26 ↗

JEEP · 2026-02-12

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0607-00 - ECU Internal Performance. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High.** ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0D0F-00 - Hybrid/ EV Battery Negative Contactor “A” Stuck Closed. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck…

08-062-26 ↗

JEEP · 2026-02-12

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0607-00 - ECU Internal Performance. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed.** ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. **Customers may also experience the following: ● Vehicle…

08-035-26 REV.A ↗

JEEP · 2026-02-06

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation SYMPTOM: the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● P0B28-00 - Hybrid/EV Battery "B" Voltage Unstable. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0607-00 - ECU Internal Performance. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failied. ● P0BBE-00 - Hybrid/EV Battery…

08-034-26 REV.A ↗

JEEP · 2026-02-06

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation SYMPTOM: the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● P0B28-00 Hybrid/EV Battery "B" Voltage Unstable. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0607-00 - ECU Internal Performance. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failied. ● P0BBE-00 - Hybrid/EV Battery…

08-039-26 ↗

JEEP · 2026-02-04

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0B28-00 - Hybrid/EV Battery “B” Voltage Unstable. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0607-00 - ECU Internal Performance. Customers may also comment on the following: ● Vehicle does not start. NOTE: The…

08-038-26 ↗

JEEP · 2026-02-04

Flash: Battery Pack Control Module (BPCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0B28-00 - Hybrid/EV Battery “B” Voltage Unstable. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0607-00 - ECU Internal Performance.** **Customers may also comment on the following: ● Vehicle does not start.…

08-036-26 ↗

JEEP · 2026-01-31

Flash: Battery Pack Control Module (BPCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● **P0B28-00 - Hybrid/EV Battery “B” Voltage Unstable. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0AA1 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0C78 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6 - Hybrid/EV Battery Charging Current High. ● P0B24 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E - Hybrid/EV Battery State Of Health Failed.** ● P1A21-00 - HV Battery Contactor Control Sequence Incorrect. ● P0B3E-00 - Hybrid/EV Battery Voltage Sense 1 Circuit High. ● P0607-00 - ECU Internal Performance. ● P1E1B-00 - Hybrid/EV…

08-035-26 ↗

JEEP · 2026-01-31

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● **P0B28-00 - Hybrid/EV Battery "B" Voltage Unstable.** ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0607-00 - ECU Internal Performance. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failied. ● P0BBE-00 - Hybrid/EV Battery Pack…

08-034-26 ↗

JEEP · 2026-01-31

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● **P0B28-00 Hybrid/EV Battery "B" Voltage Unstable.** ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0607-00 - ECU Internal Performance. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failied. ● P0BBE-00 - Hybrid/EV Battery Pack…