DTC U0101: Lost Communication With TCM

WARNING: This page is about a different car, the 2019 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 .