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Home >> Subaru >> 2019 >> WRX Base >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 61 (Front Relay Control Module (Diagnostics)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U0140: Lost Communication With Body Control Module
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DTC U0140: Lost Communication With Body Control Module

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.

DTC detecting condition: 

When the ignition is ON, CAN data from body integrated unit is not received for 4 seconds or more.

Trouble symptom: 

The headlight High does not illuminate. R wiper does not operate.

NOTE:

Perform the diagnosis for LAN system. Ref. to  LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE 

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