JEEP
08-064-26
Manufacturer communications
- Publication date
- 2026-02-12
- Received by NHTSA
- 2026-02-19
- NHTSA record numbers
- 11028874
Manufacturer summary
Original wording in English
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 Closed. Customers may also experience one or more of the following:
• **Vehicle does not start.** NOTE: **The no start condition is accompanied with one or more of the following DTCs: P0DAB-00, P0607-00, P0AA1-00, P0AA4-00, P0C78-00, P0CA6-00, P0B24-00, P1C5E-00 and/or P0BBE-00. P0BBE-00 and P0B28-00 will result in a MIL for 49 days. After 49 days of the MIL, the vehicle will no longer be allowed to start.**
• Low 12V battery causing vehicle not to start. This bulletin involves updating the BPCM with the latest available software.
• **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 Closed. Customers may also experience one or more of the following:
• **Vehicle does not start.** NOTE: **The no start condition is accompanied with one or more of the following DTCs: P0DAB-00, P0607-00, P0AA1-00, P0AA4-00, P0C78-00, P0CA6-00, P0B24-00, P1C5E-00 and/or P0BBE-00. P0BBE-00 and P0B28-00 will result in a MIL for 49 days. After 49 days of the MIL, the vehicle will no longer be allowed to start.**
• Low 12V battery causing vehicle not to start. This bulletin involves updating the BPCM with the latest available software.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Jeep
P0607-00ECU Internal PerformanceJeep
P0AA1-00Hybrid/EV Battery Positive Contactor “A” Stuck ClosedJeep
P0AA4-00Hybrid Battery Negative Contactor Circuit Stuck ClosedJeep
P0B24-00Hybrid/EV Battery "A" Voltage UnstableJeep
P0BBE-00Hybrid/EV Battery Pack Voltage VariationJeep
P0C78-00Hybrid/EV Battery System Precharge Time Too LongJeep
P0CA6-00Hybrid/EV Battery Charging Current HighJeep
P0D0F-00Hybrid/ EV Battery Negative Contactor “A” Stuck ClosedJeep
P1C5E-00Hybrid/EV Battery State Of Health FailedCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Jeep | GRAND CHEROKEE 4XE | 2023 |