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Home >> Subaru >> 2022 >> WRX Premium, Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> SUBARU Eyesight System (Driver Assist) (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U0401: Invalid Data Received From ECM/Pcm "A"

DTC U0401: Invalid Data Received From ECM/Pcm "A"

DTC detecting condition: 

Failure counter diagnosis of ECM.

Trouble symptom: 

All functions of EyeSight system do not operate.

NOTE:

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

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