Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Checked the canister vent control valve for sticking closed. Apply power and ground to the valve and verify the valve closes meaning air can not be blown through it by mouth, do it several times. Verify the EAVP canister is not full of water or fuel. Verify the vent hose and filter for the Evap canister vent control valve is not plugged or restricted. Check the Evap control system pressure sensor voltage with the key on, make sure the voltage is steady. Then test drive the vehicle and verify the Evap control system pressure sensor voltage is the same when coming back to a stop and idling as it was key on engine off. Most common failure is the valve faulty.
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