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Home >> Toyota >> 2022 >> Corolla Cross L, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Hybrid Control System - Diagnostic Codes (2 Of 3)) >> Hybrid Control System >> DTC P1631-81: Communication Error from ECM to VSC Invalid Serial Data Received [11/2022 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Before replacing the hybrid vehicle control ECU, refer to Registration.

Refer to REGISTRATION [11/2022 - ]

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