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Home >> Toyota >> 2020 >> Highlander L, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Hybrid Control System - Diagnostic Codes (1 Of 5)) >> Hybrid Control System >> DTC P0606-94: Hybrid/EV Powertrain Control Module Processor Unexpected Operation [11/2023 - ] >> DTC Summary

DTC Summary

WARNING: This page is about a different car, the 2025 Toyota Highlander and 2024 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. MALFUNCTION DESCRIPTION 

    The main CPU and sub CPU of the Hybrid vehicle control ECU monitor each other.

    The cause of this malfunction may be the following:

    Hybrid vehicle control ECU internal malfunction 

    • Hybrid vehicle control ECU malfunction
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