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Home >> Subaru >> 2019 >> Forester Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> CVT Transaxle (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U0073: Control Module Communication Bus Off >> Diagnostic Method

Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value 

Malfunction Criteria Threshold Value
CAN bus condition Bus off

Time needed for diagnosis:  2 seconds

Malfunction indicator light illumination:  Illuminates as soon as a malfunction occurs.

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