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DTC U0402: Invalid Data Received From TCM

WARNING: This page is about a different car, the 2021 Subaru Ascent. However, it is still accessible from the selected car via links, so may be relevant.

DTC detecting condition: 

CAN data from TCM is abnormal.

Trouble symptom: 

Left side of preventive safety screen (powertrain display) is different between AWD model and 2WD model.

NOTE: For the diagnostic procedure, refer to DTC U0074. Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0074 CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF .
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