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Home >> Infiniti >> 2012 >> M35h >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - DTCS U0101 To P014F >> DTC U1003: Can Comm Circuit >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
U1003 CAN COMM CIRCUIT (CAN communication line)
  • When ECM is not transmitting or receiving CAN communication signal.
  • Harness or connectors (CAN communication line is open or shorted)
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