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EC-316 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P0442 EVAP CONTROL SYSTEM P0442 EVAP CONTROL SYSTEM DTC Logic INFOID:0000000010095005 DTC DETECTION LOGIC This diagnosis detects leakage in the EVAP purge line using engine intake manifold vacuum. If pressure does not increase, the ECM will check for leakage in the line between the fuel tank and EVAP can- ister purge volume control solenoid valve, under the following “Vacuum test” conditions. The EVAP canister vent control valve is closed to shut the EVAP purge line off. The EVAP canister purge vol- ume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed. 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 No. Trouble diagnosis name DTC detecting condition Possible cause P0442 EVAP control system EVAP control system has a leakage, • Incorrect fuel tank vacuum relief valve EVAP canister purge volume control solenoid • Foreign matter caught in EVAP canister vent con- trol valve. • EVAP canister or fuel tank leakage valve and the circuit • Fuel tank temperature sensor missing or damaged • EVAP canister is saturated with water PBIB3640E |