P3000 – HV Battery Control System Malfunction

Description

The ECM detects a malfunction in the HV battery control system.

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Symptoms

  • Reduced power
  • Poor fuel economy
  • Check engine light

Causes

  • Battery ECU fault
  • Wiring issues
  • Battery deterioration

Diagnosis

  • Scan hybrid ECU
  • Check HV battery data
  • Inspect wiring

Repair

  • Repair wiring
  • Replace HV battery ECU