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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 125 ( Automatic Transaxle System - Diagnostic Codes (3 Of 3) & Circuit Tests) >> Automatic Transaxle System >> DTC U0291-87: Lost Communication with Gear Shift Control Module "B" Missing Message [08/2023 - ] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
The monitor will run whenever the following DTCs are not stored None
Battery Voltage 10 V or more
Ignition switch ON
Starter OFF