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Highlander L, FWD
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Repair and Diagnosis
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Different car
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Section 5 (Hybrid Control System - Diagnostic Codes (5 Of 5) & Circuit Tests)
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Hybrid Control System
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DTC P3123-87: Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message [11/2023 - ]
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Component Operating Range
Component Operating Range
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.
Hybrid vehicle control ECU
DTC P3123 (INF P3123-87) is not detected