DTC B144B-87: Lost Communication with Front Left Air Mix Damper Control Servo Motor LIN Missing Message [11/2021 - ]: Wiring Diagram
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.