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Home >> Toyota >> 2012 >> Prius Three >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Except Plug-In)) (Diagnostic Codes (P0069-273 - P0A78-113)) >> Hybrid Control System >> DTC P0A1D-721: Hybrid Powertrain Control Module; DTC P0A1D-722: Hybrid Powertrain Control Module; DTC P0A1D-723: Hybrid Powertrain Control Module; DTC P0A1D-787: Hybrid Powertrain Control Module; DTC P0A1D-818: Hybrid Powertrain Control Module >> Description
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DTC P0A1D-721: Hybrid Powertrain Control Module; DTC P0A1D-722: Hybrid Powertrain Control Module; DTC P0A1D-723: Hybrid Powertrain Control Module; DTC P0A1D-787: Hybrid Powertrain Control Module; DTC P0A1D-818: Hybrid Powertrain Control Module: Description

The power management control ECU (HV CPU) monitors its internal operation, it will set DTCs and perform fail-safe control when it detects the following malfunctions. If any of the following DTCs are output, replace the power management control ECU (HV CPU).

DTC No. INF Code DTC Detection Condition Trouble Area
P0A1D 721 ECU internal error Power management control ECU
P0A1D 722 ECU internal error Power management control ECU
P0A1D 723 ECU internal error Power management control ECU
P0A1D 787 ECU internal error Power management control ECU
P0A1D 818 ECU internal error Power management control ECU