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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 501 (Engine Control System (DTC/Circuit Diagnosis) (2 Of 3)) >> 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 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. 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 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.

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch ON and wait at least 5 seconds.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Start engine and let it idle for at least 1 minute.
    4. Repeat next procedures five times.
      1. Increase the engine speed up to between 3, 000 and 3, 500 rpm and maintain that speed for 2 minutes.

        Do not exceed 2 minutes.

      2. Fully released accelerator pedal and keep engine idle for about 5 seconds.
    5. Repeat next procedure 27 times.
      1. Quickly increase the engine speed up to between 3, 000 and 3, 500 rpm and maintain that speed for 25 to 30 seconds.
      2. Fully released accelerator pedal and keep engine idle for at least 35 seconds.
        G05868641Courtesy of NISSAN NORTH AMERICA, INC.
    6. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    INSPECTION END

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