LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2017 >> QX60 Base, FWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (Except Hybrid) (3 Of 4) >> DTC/Circuit Diagnosis >> DTC P0441: EVAP Control System >> DTC Description >> DTC Confirmation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Confirmation Procedure

  1. CHECK DTC PRIORITY

    If DTC P0441 is displayed with other DTC such as P2122, P2123, P2127, P2128 or P2138, first perform the confirmation procedure (trouble diagnosis) for other DTC.

    Is DTC P2122, P2123, P2127, P2128 or P2138 detected?

    YES 

    Perform diagnosis of applicable.

    NO 

    GO TO STEP 2  .

  2. INSPECTION START

    Do you have CONSULT?

    YES 

    GO TO STEP 3  .

    NO 

    GO TO STEP  7.

  3. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

    TESTING CONDITION: 

    Always perform test at a temperature of 5°C (41°F) or more. 

    GO TO STEP 4  .

  4. PERFORM DTC CONFIRMATION PROCEDURE-I

    G-20With CONSULT 

    1. Start engine and warm it up to normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Start engine and let it idle for at least 70 seconds.
    6. On CONSULT screen, select "ENGINE">>"DTC Work Support">>"EVAPORATIVE SYSTEM">>"PURG FLOW P0441".
    7. Touch "START".

    Is "COMPLETED" displayed on CONSULT screen?

    YES 

    GO TO STEP 6  .

    NO 

    GO TO STEP 5  .

  5. PERFORM DTC CONFIRMATION PROCEDURE-II

    When the following conditions are met, "TESTING" will be displayed on the CONSULT screen. Maintain the conditions continuously until "TESTING" changes to "COMPLETED". (It will take at least 35 seconds.)

    Selector lever Suitable position
    VHCL SPEED SE 32 - 120 km/h (20 - 75 mph)
    ENG SPEED 500 - 3, 000 rpm
    B/FUEL SCHDL 1.25 - 7.6 msec
    COOLAN TEMP/S More than 0°C (32°F)
    CAUTION:

    Always drive vehicle at a safe speed.

    Is "COMPLETED" displayed on CONSULT screen?

    YES 

    GO TO STEP 6  .

    NO 

    Perform DTC CONFIRMATION PROCEDURE again. GO TO STEP  3.

  6. PERFORM DTC CONFIRMATION PROCEDURE-III

    Touch "SELF-DIAG RESULTS".

    Is "OK" displayed on CONSULT screen?

    YES-1 

    To check malfunction symptom before repair: Refer to INTERMITTENT INCIDENT .

    YES-2 

    Confirmation after repair: INSPECTION END

    NO 

    Proceed to DIAGNOSIS PROCEDURE .

  7. PERFORM COMPONENT FUNCTION CHECK

    NOTE:

    Use component function check to check the overall monitoring function of the EVAP control system purge flow monitoring. During this check, a 1st trip DTC might not be confirmed.

    G-21Without CONSULT 

    1. Lift up drive wheels.
    2. Start engine (VDC switch OFF) and warm it up to normal operating temperature.
    3. Turn ignition switch OFF and wait at least 10 seconds.
    4. Turn ignition switch ON.
    5. Turn ignition switch OFF and wait at least 10 seconds.
    6. Start engine and wait at least 70 seconds.
    7. Set voltmeter probes to ECM harness connector terminals as per the following.
      ECM
      Connector + -
      Terminal
      E32 173 200
    8. Check EVAP control system pressure sensor value at idle speed and note it.
    9. Establish and maintain the following conditions for at least 1 minute.
      Air conditioner switch ON
      Headlamp switch ON
      Rear window defogger switch ON
      Engine speed Approx. 3, 000 rpm
      Gear position Any position other than P, N or R
    10. Verify that EVAP control system pressure sensor value stays 0.1 V less than the value at idle speed (measured at step 8) for at least 1 second.

    Is the inspection result normal?

    YES-1 

    To check malfunction symptom before repair: Refer to INTERMITTENT INCIDENT .

    YES-2 

    Confirmation after repair: INSPECTION END

    NO 

    Proceed to DIAGNOSIS PROCEDURE .