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DTC U0073: Control Module Communication Bus A Off

DTC U0073: CONTROL MODULE COMMUNICATION BUS A OFF

Description:   
Possible Causes:   
Diagnostic Aids:  Network DTC concerns occur during module to module communication. Refer to the appropriate Module Communications Network article, Communication Network DTC Chart to continue diagnosis.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
Refer to the appropriate articles related to the description, possible causes and diagnostic aids.