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Home >> Toyota >> 2025 >> Prius LE >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Battery System (HEV) - Diagnostic Codes (2 Of 2), Symptom Tests & Circuit Tests >> HYBRID BATTERY SYSTEM (for M20A-FXS) >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [12/2022 - ] >> Monitor Description

Monitor Description

If the battery ECU assembly detects a problem with CAN communication with the ECU, it will illuminate the MIL and store a DTC.

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