Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0101 lost communication with tcm

Subaru Legacy BN/BS (2015-2019) Service Manual / Steering responsive fog lights (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0101 lost communication with tcm

Detected when CAN data (vehicle speed signal) is not received from TCM.

NOTE:

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

Dtc u0416 invalid data received from vehicle dynamics control module

Detected when data from VDC CM is abnormal.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Dtc u0402 invalid data received from tcm

Detected when CAN data from TCM does not arrive.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

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DIAGNOSIS START CONDITION:When ignition switch is ON.DTC DETECTING CONDITION:Backup battery is disconnected for at least 5 seconds when the ignition switch is turned ON. (Detached backup battery connection, etc.)TROUBLE SYMPTOM:• ACN/SOS function cannot be used when the main battery is disconn ...