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Home >> Lexus >> 2025 >> NX 350h >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (Electronic A/T Shift Lever System - Diagnostic Codes & Circuit Tests) >> Electronic Shift Lever System >> DTC U0291-00: Lost Communication with Gear Shift Control Module "B" (System 2) Missing Message [11/2021 - ] >> Monitor Description

Monitor Description

WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. However, it is still accessible from the selected car via links, so may be relevant.

The shift control ECU monitors the CAN communication system for malfunctions, and if a malfunction is detected, the ECM stores a DTC and the MIL illuminates.

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