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Home >> Toyota >> 2025 >> Prius Plug-In Hybrid SE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Hybrid Battery System (HEV) - Diagnostic Codes (1 Of 2)) >> HYBRID BATTERY SYSTEM (for M20A-FXS) >> DTC P0A1D-94: Hybrid/EV Powertrain Control Module Unexpected Operation [12/2022 - ] >> Monitor Description

Monitor Description

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The battery ECU assembly monitors the hybrid vehicle control ECU via CAN communication. If the battery ECU assembly detects a malfunction in the hybrid vehicle control ECU, it will illuminate the MIL and store a DTC.

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