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Home >> Audi >> 2018 >> A6 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Hybrid Control System (Diagnostic Codes (P0C73-776 - U0424-537) & Circuit Tests))) >> Hybrid Control System >> DTC P3000-389: Battery Control System [08/2013 - ] >> Description

DTC P3000-389: Battery Control System [08/2013 - ]: Description

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

The power management control ECU alerts the driver and performs fail-safe control based on error signals received from the battery smart unit.

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.

DTC No. INF Code DTC Detection Condition Trouble Area
P3000 389 HV battery voltage drops
  • Engine
  • Hybrid vehicle transaxle assembly
  • HV battery