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Home >> Nissan-Datsun >> 2013 >> Quest SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC 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. Refer to "EXPLODED VIEW ".
    3. Wipe clean valve housing.
      Fig 1: Identifying Spring Pressure Valve, Vaccum Valve, Plate And Gasket
      G08959781Courtesy of NISSAN NORTH AMERICA, INC.
    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
      G08959782Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: GO TO 2.

  2. REPLACE FUEL FILLER CAP 

    Replace fuel filler cap. Refer to "EXPLODED VIEW ".

    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