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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 502 (Engine Control System (DTC/Circuit Diagnosis) (1 Of 3)) >> DTC/Circuit Diagnosis >> DTC U1001: Can Comm Circuit >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

U1001

CAN COMM CIRCUIT

(CAN communication line)

When ECM is not transmitting or receiving CAN communication signal other than OBD (emission related diagnosis) for 2 seconds or more.

  • Harness or connectors

    (CAN communication line is open or shorted)