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DTC P0456 EVAP CONTROL SYSTEM EC-981 < SERVICE INFORMATION > [VK45DE] C D E F G H I J K L M A EC N P O 2. Set the pressure pump and a hose. 3. Also set a vacuum gauge via 3-way connector and a hose. 4. Turn ignition switch ON. 5. Connect GST and select “Service $08”. 6. Using “Service $08” control the EVAP canister vent control valve 7. Apply pressure and make sure the following conditions are sat- If OK, go to next step. 8. Disconnect GST. 9. Start engine and warm it up to normal operating temperature. 10. Turn ignition switch OFF and wait at least 10 seconds. 11. Restart engine and let it idle for 90 seconds. 13. Turn ignition switch OFF. NOTE: Diagnosis Procedure INFOID:0000000001326822 1. CHECK FUEL FILLER CAP DESIGN 1. Turn ignition switch OFF. 2. Check for genuine NISSAN fuel filler cap design. OK or NG OK >> GO TO 2. NG >> Replace with genuine NISSAN fuel filler cap. 2. CHECK FUEL FILLER CAP INSTALLATION Check that the cap is tightened properly by rotating the cap clockwise. OK or NG OK >> GO TO 3. NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. 2. Retighten until ratcheting sound is heard. 3. CHECK FUEL FILLER CAP FUNCTION Check for air releasing sound while opening the fuel filler cap. OK or NG OK >> GO TO 5. NG >> GO TO 4. 4. CHECK FUEL TANK VACUUM RELIEF VALVE EC-620, "Component Inspection" OK or NG OK >> GO TO 5. SEF462UI SEF915U |