DTC P0A09-591: DC / DC Converter Status Circuit Low Input [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 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) |
|