DTC Detection Logic
WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
TCM communication blockage lasts for 2 seconds or more when turning ON the ignition switch. (Communication not established.)
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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U0073 |
COMM BUS A OFF (Control Module Communication Bus A Off) |
Diagnosis condition |
When turning ON the ignition switch |
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Signal |
CAN communication |
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Threshold |
TCM communication blockage (Communication not established) |
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Diagnosis delay time |
Last for 2 seconds or more |
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