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Home >> Scion >> 2014 >> iQ EV >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes P0516-769 - P0A90-251) (Electric) >> 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 DC/DC converter controls output voltage (12 V) based on duty ratio signals sent from the power management control ECU.

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