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Home >> Toyota >> 2020 >> Highlander L, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Hybrid Control System - Diagnostic Codes (5 Of 5) & Circuit Tests) >> Hybrid Control System >> DTC U029A-87: Lost Communication with Hybrid/EV Battery Sensor Module Missing Message [11/2023 - ] >> Monitor Description

Monitor Description

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.

If a malfunction in communication line between the battery voltage sensor and hybrid vehicle control ECU is detected, the hybrid vehicle control ECU will illuminate the MIL and store a DTC.

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