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Home >> Toyota >> 2025 >> Prius Plug-In Hybrid SE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Hybrid Control System (HEV) - Diagnostic Codes (1 Of 4)) >> HYBRID CONTROL SYSTEM (for M20A-FXS) >> DTC P0A1F-94: Hybrid/EV Battery Energy Control Module Unexpected Operation [12/2022 - ] >> DTC Summary

DTC Summary

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  1. MALFUNCTION DESCRIPTION 

    The hybrid vehicle control ECU (main CPU) monitors the battery ECU assembly.

    The cause of this malfunction may be the following:

    Battery ECU assembly internal malfunction 

    • Battery ECU assembly malfunction