P0448 NISSAN Evaporative Emission Control System Vent Control Circuit Close

Tech notes

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

2006-2015 Nissan Titan
2006-2015 Nissan Titan Factory Service Bulletin OBDII Code P0448

What does this mean?

P0448 NISSAN Description

The Evaporative Emission System (EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. This solenoid (the EVAP canister vent control valve) responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized.

A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system componentsThis solenoid valve is used only for diagnosis, and usually remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows EVAP Control System (Small Leak) diagnosis.

OBDII Code P0448 Nissan - Evaporative Emission Control System Vent Control Circuit Close - AutoCodes.com

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P0448 NISSAN - Evaporative Emission Control System Vent Control Circuit Close

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Tech notes

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Possible symptoms

P0448 NISSAN Description

P0448 NISSAN Information for specific Nissan models

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