DTC Detection Logic
WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
Possible causes |
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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) |