Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0074 control module communication bus "body-can" off

Subaru Legacy BN/BS (2015-2019) Service Manual / Steering responsive fog lights (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0074 control module communication bus "body-can" off

Detected when CAN line abnormality is detected.

NOTE:

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

Dtc u1140 lost communication with body control module body-can

Detected when CAN data is not received from body integrated unit.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

General description

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Other materials:

Inspection
1. Check that the thermostat does not have deformation, cracks or damage.2. Check that the thermostat valve closes completely at an ambient temperature.3. Immerse the thermostat and a thermometer in water. Raise water temperature gradually, and check the temperature and valve lift when the valve beg ...