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Home >> Infiniti >> 2014 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 49 (Automatic Transmission (Re0F10J) (DTC/Circuit Diagnosis) (Except Hybrid) (1 Of 2)) >> DTC/Circuit Diagnosis >> DTC U0073: Communication Bus A Off >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
DTC CONSULT screen terms
(Trouble diagnosis content)		 DTC detection condition Possible causes
U0073 COMM BUS A OFF
(Control Module Communication Bus A Off)		 TCM communication blockage lasts for 2 seconds or more when turning ON the ignition switch. (Communication not established.) Harness or connector
(CAN communication line is error)
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