Possible causes
– Faulty canister vent control valve
– Purge Control Valve harness is open or shorted
– Purge Control Valve electrical circuit poor connection
– Purge Control Valve harness is open or shorted
– Purge Control Valve electrical circuit poor connection
Tech description
Very common problem with Nissan vehicles. Before replacing any parts, check for damage EVAP canister and for loose hoses from the vent control valve to the canister.
There are factory service bulletins for the following Nissan models:
2005-2007 Nissan Pathfinder
2005-2007 Nissan Pathfinder Factory Service Bulletin OBDII Code P0448
2007-2009 Nissan Altima Sedan
2008-2009 Nissan Altima Coupe
2007-2009 Nissan Altima Hybrid
2009 Nissan Maxima
Nissan Factory Service Bulletin OBDII Code P0448
When is the obd code mean?
EVAP canister vent control valve remains closed under specified driving conditions.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0448 NISSAN OBD Code Description