P0455 NISSAN - EVAP Control System Gross Leak Detected

Malfunction is detected when EVAP control system has a leak, EVAP control system does not operate properly.

P0455 NISSAN Possible Causes 


Missing or loose fuel cap 
Incorrect fuel filler cap used 
Fuel filler cap remains open or fails to close 
Foreign matter caught in fuel filler cap 
EVAP canister or fuel tank leaks 
EVAP system hose leaking 
Fuel tank leaking

P0455 Nissan Description 


This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition. 
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.