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Home >> Nissan-Datsun >> 2009 >> Maxima S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0451 To P1217 >> P0456 EVAP Control System >> Component Inspection
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Component Inspection

  1. CHECK FUEL FILLER CAP
    1. Turn ignition switch OFF.
    2. Remove fuel filler cap.
    3. Wipe clean valve housing.
      Fig 1: Identifying Spring, Pressure Valve, Vacuum Valve And Gasket Location
      G05869893Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Install fuel filler cap adapter (commercial service tool) to fuel filler cap.
    5. Check valve opening pressure and vacuum.

    Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm 2  , 2.22 - 2.90 psi) 

    Vacuum: -6.0 to -3.3 kPa (-0.061 to -0.034 kg/cm 2  , -0.87 to -0.48 psi) 

    Fig 2: Checking Valve Opening Pressure And Vacuum
    G05869894Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: GO TO 2.

  2. REPLACE FUEL FILLER CAP

    Replace fuel filler cap.

    CAUTION: Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may illuminate.

    : INSPECTION END