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Home >> Toyota >> 2012 >> Highlander Limited, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 119 (Hybrid Battery System (Diagnostic Codes (P0A7F-123 - U029A-123)) (Hybrid)) >> Hybrid Battery System >> DTC U029A-123: Lost Communication with Hybrid Battery Pack Sensor Module >> Monitor Description

Monitor Description

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If a malfunction in communication line between the battery smart unit and hybrid vehicle control ECU is detected, the hybrid vehicle control ECU illuminates the MIL and sets a DTC.