08-311-26

Powertrain Modules Software Update Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more the following Diagnostic Trouble Codes (DTCs):
• P0AA7-00 - Hybrid/EV Battery Pack "A" Voltage Isolation Sensor.
• P1614-00 - ECU Reset/Recovery Occurred.
• B1A8A-00 - Multi-Module VIN Handshake Failure.
• P1CDB-00 - Hybrid/EV Wakeup Control 1 Output Circuit Short To Battery.
• P1E25-00 - EV Battery Failure Level 2.
• P0D10-00 - Hybrid/EV Battery Negative Contactor A Stuck Open.
• P0D09-00 - Hybrid/EV Battery Positive Contactor A Stuck Open.
• P0DE6-00 - Hybrid/EV Battery Pack Cell Voltage Low. NOTE: Active or stored.
• P1DAF - Incompatible Limp In Action Requested. NOTE: Active or stored.
• P1CDE-00 – Hybrid/EV Wakeup Control 2 Output Circuit Short to Ground.
• P1CDA-00 – Hybrid/EV Wakeup Control 1 Output Circuit/Open.
• U00C6-00 – Lost Communication With AIR Pressure Sensor.
• P0F00-00 - Hybrid/EV Battery Module 1 Performance.
• P0F01-00 - Hybrid/EV Battery Module 2 Performance.
• P0F02-00 - Hybrid/EV Battery Module 3 Performance.
• P0F03-00 - Hybrid/EV Battery Module 4 Performance.
• P0F04-00 - Hybrid/EV Battery Module 5 Performance.
• P0F05-00 - Hybrid/EV Battery Module 6 Performance.
• P0F06-00 - Hybrid/EV Battery Module 7 Performance.
• P0F07-00 - Hybrid/EV Battery Module 8 Performance.
• P0F08-00 - Hybrid/EV Battery Module 9 Performance.
• P0F09-00 - Hybrid/EV Battery Module 10 Performance.
• P0F0A-00 - Hybrid/EV Battery Module 11 Performance.
• P0F0B-00 - Hybrid/EV Battery Module 12 Performance.
• P0F0C-00 - Hybrid/EV Battery Module 13 Performance.
• P0CA6-00 - Hybrid/EV Battery Charging Current High. NOTE: If the following DTCs are present/active in the BPCM, Battery Pack replacement will be required. Guided Diagnostics will prompt you for the repair action if the diagnostic is present on the vehicle.
• P0ADB-00 - Hybrid/EV Battery Positive Contractor A Control Circuit Low.
• P0AE2-00 - Hybrid/EV Battery Precharge Contactor Circuit Stuck Closed.
• P0AA1-00 - Hybrid/EV Battery Positive Contactor "A" Stuck Closed.
• P0FF8-00 - Hybrid/EV Battery Precharge Contactor Circuit "B" Stuck Closed. Customers may also comment on one or more of the following:
• Vehicle will not start.
• A warning message will appear in the Instrument Panel Cluster (IPC) informing the driver to stop safely because the vehicle will be shutting down soon.
• Wrench icon is illuminated on the IPC.
• Vehicle will not enter Drive Ready Mode. This bulletin also includes the following software enhancements:
• Software enhancements to prevent multiple DTCs from falsely setting.
• Improved battery State of Charge (SoC) accuracy in off-nominal conditions.
• Bootloader update to prevent battery disconnect unit damage.
• Improvements in detecting pre-existing battery disconnect unit damage.
• Charging related enhancements that may lead to DTC P0CA6 falsely setting.