DTC P3000-389: Battery Control System [10/2015 - ]: Description

The hybrid vehicle control ECU assembly alerts the driver and performs fail-safe control based on error signals received from the battery voltage sensor.

This DTC is set if the HV battery is discharged excessively or the hybrid control system malfunctions.

HINT: 

If the HV battery voltage has dropped due to a malfunction in other components such as the inverter with converter assembly or the hybrid vehicle transaxle assembly, recharging the HV battery will restore the voltage. If the HV battery voltage has dropped excessively after the vehicle was left for a long time, the HV battery will need to be replaced.