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.
When the ignition switch is ON, TCM is unable to receive the CAN communications signal from BCM continuously for 2 seconds or more.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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U0140 |
LOST COMM (BCM) (Lost Communication With Body Control Module) |
Diagnosis condition |
When the ignition switch is ON |
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Signal |
CAN communication signal |
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Threshold |
TCM is unable to receive the CAN communications signal from BCM |
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Diagnosis delay time |
Continuously for 2 seconds or more |
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