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EC-320 < DTC/CIRCUIT DIAGNOSIS > [MRA8DE] P0456 EVAP CONTROL SYSTEM P0456 EVAP CONTROL SYSTEM DTC Logic INFOID:0000000009758557 DTC DETECTION LOGIC This diagnosis detects leaks in the EVAP line between fuel tank and EVAP canister purge volume control sole- noid valve, using the negative pressure caused by decrease of fuel temperature in the fuel tank after turning ignition switch OFF. If ECM judges there are no leaks, the diagnosis will be OK. CAUTION: • Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may illuminate. • If the fuel filler cap is not tightened properly, the MIL may illuminate. • Use only a genuine NISSAN rubber tube as a replacement. DTC CONFIRMATION PROCEDURE JSBIA0416GB DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P0456 EVAP VERY SML LEAK • EVAP system has a leak. erate properly. • Incorrect fuel tank vacuum relief valve ister purge volume control solenoid valve. • Foreign matter caught in EVAP canister vent control valve. • EVAP canister or fuel tank leaks and the circuit • Fuel tank temperature sensor damaged • EVAP canister is saturated with water control solenoid valve |