I have a 98 nissan sentra, couple days ago started shutting off while driving. At first would restart immediately but now takes an hour before will restart. Got codes for vent valve, evap emissions?


Asked by Sep 06, 2016 at 07:01 PM about the 1998 Nissan Sentra GXE

Question type: Maintenance & Repair

codes p1448, 0440  checked gas cap, where should i start, by replacing vent

1 Answer


P1448 NISSAN - EVAP Canister Vent Control Valve Open - Possible causes - EVAP canister vent control valve - EVAP canister is saturated with water - EVAP control system pressure sensor and the circuit - Blocked rubber tube to EVAP canister vent control valve - Water separator. Start by checking for damage EVAP canister or hoses. If no hoses are damage the EVAP canister vent control valve may have to be replaced. >>>>>P0440 NISSAN - EVAP Control System Small Leak - 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

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