Engine-Codes - Nissan - P0448 Nissan

P0448 Nissan Code - Evaporative Emission Control System Vent Control Circuit Close

- Code Popularity: 146,597 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P0448 Nissan?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty canister vent control valve
  • Purge Control Valve harness is open or shorted
  • Purge Control Valve electrical circuit poor connection

Code Tech Notes

A 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 is a factory Nissan service bulletin to help diagnose the P0448 code:
Nissan Factory Service Bulletin OBDII Code P0448

There are factory service bulletins for the following Nissan models:

2005-2007 Nissan Pathfinder
2005-2007 Nissan Pathfinder 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

⚠ Does your Nissan have Safety Recalls? → Check here

How to Fix the DTC P0448 Nissan?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P0448 Nissan Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0448 Nissan code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

When is the Code Detected?

EVAP canister vent control valve remains closed under specified driving conditions.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0448 Nissan Code Mean?

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

Need more Information on the Code?

Need more information on how to fix the P0448 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0448 Nissan code diagnosed by a professional: Find a repair shop in your area