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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Control System (DTC/Circuit Diagnosis) (3 Of 5)) >> DTC/Circuit Diagnosis >> DTC P0448: EVAP Canister Vent Control Valve >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always perform the following 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.

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 

    SYMBOL With CONSULT

    1. Turn ignition switch ON and wait at least 5 seconds.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT.
    4. Start engine and let it idle for at least 1 minute.
    5. Repeat next procedures 3 times.
      1. Increase the engine speed up to 3, 000 to 3, 500 rpm and keep it for 2 minutes and 50 seconds to 3 minutes.

        Never exceed 3 minutes.

      2. Fully released accelerator pedal and keep engine idle for about 5 seconds.
    6. Repeat next procedure 20 times.
      • Quickly increase the engine speed up to 4, 000 to 4, 500 rpm or more and keep it for 25 to 30 seconds.
      • Fully released accelerator pedal and keep engine idle for at least 35 seconds.
        G04074140Courtesy of NISSAN NORTH AMERICA, INC.
    7. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    NO

    Confirmation after repair: INSPECTION END

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