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Home >> Toyota >> 2012 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 114 (Hybrid Vehicle Control System (Diagnostic Codes (P0069-273 - P0A63-502)) (Hybrid)) >> 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

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

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
  • Hybrid vehicle control ECU