Fuel Tank Vacuum Relief Valve (Built Into Fuel Filler Cap)

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Wipe clean valve housing.

Fig 1: Sectional View Of Fuel Tank Vacuum Relief Valve
Courtesy of NISSAN NORTH AMERICA, INC.
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 Using Special Tools
Courtesy of NISSAN NORTH AMERICA, INC.
If out of specification, replace fuel filler cap as an assembly. Refer to REMOVAL AND INSTALLATION .
CAUTION: Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.