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Home >> Subaru >> 2023 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Memory Modules >> Power Seat Memory System (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

DTC detecting condition: 

When no data was received from BIU for 5 or 10 seconds.

Trouble symptom: 

Seat memory registration/restoration is unable to be performed.

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