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Home >> Infiniti >> 2022 >> QX80 Premium Select, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (5 Of 5) >> Engine (ECM) >> U1001 Can Comm Circuit >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

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.

NOTE: Confirm if DTC is PAST or CRNT. If DTC is CRNT, proceed with Diagnosis Procedure. If DTC is PAST, clear DTC. Do not replace the ECM for a PAST DTC.
  • Harness or connectors

    (CAN communication line is open or shorted)