Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0327 software incompatibility with vehicle security control module

Subaru Legacy BN/BS (2015-2019) Service Manual / Body control system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0327 software incompatibility with vehicle security control module

No data is received from keyless access CM.

NOTE:

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

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

Received error data from ECM.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Dtc u0164 lost communication with hvac control module

No data is received from A/C CM.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

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Before performing diagnostics, make sure that the engine oil level is correct and no oil leakage exists.TroublePossible causeCorrective actionWarning light remains ON.a. Oil pressure switch failure Cracked diaphragm or oil leakage within switchReplace. Broken spring or seized contactsReplace.b ...