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Home >> Toyota >> 2012 >> Prius V >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System [Diagnostic Codes (P0069-273 - P0A78-113)] >> Hybrid Control System >> DTC P0A09-591: DC / DC Converter Status Circuit Low Input >> Description

DTC P0A09-591: DC / DC Converter Status Circuit Low Input: Description

The hybrid vehicle converter (DC/DC converter) controls output voltage (12 V) based on duty ratio signals sent from the power management control ECU (HV CPU).

DTC No. INF Code DTC Detection Condition Trouble Area
P0A09 591 Hybrid vehicle converter voltage switching (VLO) signal circuit malfunction (Open or short to GND)
  • Wire harness or connector
  • Inverter with converter assembly
  • Power management control ECU