LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2025 >> NX 250 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Heating / Air Conditioning System - Diagnostic Codes, Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for HEV Model) >> DTC B1402-87: Lost Communication with Front Air Outlet Damper Control Servo Motor LIN Missing Message [11/2021 - ] >> Procedure

DTC B1402-87: Lost Communication with Front Air Outlet Damper Control Servo Motor LIN Missing Message [11/2021 - ]: Procedure

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.
  1. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Air Conditioner > Trouble Codes 

      Result

      Result Proceed to
      B142A-88 is output A
      B142A-88 is not output B

    Result: 

    GO TO DTC B142A-88. Refer to  DTC B142A-88: Servo Motor LIN Communication Bus off [11/2021 - ]  

    Result: 

    REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY. Refer to  DISASSEMBLY [11/2021 - 03/2024]  , or refer to  DISASSEMBLY [03/2024 - ]