Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0422 invalid data received from body control module

Subaru Legacy BN/BS (2015-2019) Service Manual / Keyless access with push button start system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0422 invalid data received from body control module

Detected when CAN data from BIU is abnormal.

NOTE:

Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE

Dtc u0100 lost communication with ecm/pcm "a"

Detected when CAN data from the engine control module (ECM) does not arrive.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Dtc u0401 invalid data received from ecm/pcm "a"

Detected when there is malfunction in CAN data from the engine control module (ECM).NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

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Inspection
1. SYSTEM INSPECTIONSymptomsInspection orderRear window defogger does not operate.(1) Check the fuse.(2) Check the rear defogger relay.(3) Check the rear window defogger switch.(4) Check the heat wire.(5) Check the wiring harness.(6) Check body integrated unit.NOTE:Rear window defogger system can be ...