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Home >> Infiniti >> 2024 >> Q50 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 7) >> Engine (ECM) >> P05EC Cold Start Control >> DTC Diagnosis Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC Diagnosis Procedure

  1. CHECK DTC PRIORITY 

    If DTC P05EC is displayed with other DTC, first perform the trouble diagnosis for other DTC.

    Is applicable DTC detected?

    YES>>

    Perform diagnosis of applicable. Refer to DTC Index .

    NO>>

    GO TO 2.

  2. INSPECTION START 
    1. Turn ignition switch ON.
    2. Erase DTC.
    3. Perform DTC confirmation procedure. Refer to DTC Description .
    4. Check 1st trip DTC.

    Is the 1st trip DTC P05EC displayed again?

    YES>>

    Replace ECM. Refer to ECM : Removal and Installation .

    NO>>

    INSPECTION END