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Home >> Nissan-Datsun >> 2019 >> 370Z Base, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 3) >> Engine (ECM) >> DTC U1003: Can Comm Circuit >> DTC Description >> Except for the models from USA 19MY, CANADA 19MY >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC U1003 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607.

Refer to DTC Description .

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

U1003

Lost communication with VVEL control module

CAN communication signal other than OBD (emission related diagnosis) is not received between VVEL control module and ECM for 2 seconds or more.
  • Harness or connectors

    (VVEL CAN communication line is open or shorted)

  • ECM
  • VVEL control module
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