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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 569 (Automatic Transmission (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC U0140: Lost Communication (BCM) >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2020 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

U0140

LOST COMM (BCM)

(Lost Communication With Body Control Module)

When the ignition switch is ON, TCM is unable to receive the CAN communications signal from BCM continuously for 2 seconds or more.

  • BCM
  • Harness or connector

    (CAN communication line is open or shorted)