Flash: Battery Pack Control Module (BPCM) Diagnostic and System Updates
This bulletin involves updating the BPCM with the latest available software.
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, the technician may one or more of the following Diagnostic Trouble Codes (DTCs) have been set:P1A29 - Cell Supervisory Circuit A Failure. P1A2A - Cell Supervisory Circuit B Failure. P1D3E - Internal Control Module Shut Off Test Error. U0594 - Implausible Data Received from HCP. P2BE5 - Hybrid/EV Battery Pack Current Sensor "C" Circuit Performance. B12B0-85 - Charge Temperature Indicator-Signal Above Allowable Range.