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P0456 EVAP CONTROL SYSTEM EC-263 < COMPONENT DIAGNOSIS > [QR25DE] C D E F G H I J K L M A EC N P O 3. Wipe clean valve housing. 4. Install fuel filler cap adapter (commercial service tool) to fuel filler cap. 5. Check valve opening pressure and vacuum. 6. If out of specification, replace fuel filler cap as an assembly. CAUTION: Use only a genuine fuel filler cap as a replacement. If an incor- SEF445Y 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) SEF943S |