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Engine-Codes – Nissan – P0447 Nissan

P0447 Nissan Code - Evaporative Emission Control System Vent Control Circuit Open

Quick Answer

The P0447 Nissan code indicates that there is a malfunction in the Evaporative Emission Control System Vent Control Circuit, specifically that the circuit is open. Common causes include Faulty vent control valve, Damaged wiring in the vent control circuit, Corrosion or rust in the system. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0447 Nissan indicates Evaporative Emission Control System Vent Control Circuit Open.
Common causes
Common causes include Faulty vent control valve, Damaged wiring in the vent control circuit, Corrosion or rust in the system.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Aug 18, 2024
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Code P0447 Nissan Description

The P0447 Nissan code indicates that there is a malfunction in the Evaporative Emission Control System Vent Control Circuit, specifically that the circuit is open. The Evaporative Emission Control System is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. The vent control circuit is crucial for regulating the pressure and flow of these vapors. When this circuit is open, it means that there is an interruption in the flow of information between the vehicle's computer and the vent control valve, leading to potential issues with emissions control.

OBDII Code P0447 Nissan - Evaporative Emission Control System Vent Control Circuit Open
P0447 Nissan Code - Evaporative Emission Control System Vent Control Circuit Open

Common Causes of P0447 Nissan

  1. Faulty vent control valve
  2. Damaged wiring in the vent control circuit
  3. Corrosion or rust in the system
  4. Issues with the vehicle's computer system
  5. Loose or damaged gas cap

Symptoms of P0447 Nissan

  1. Check Engine Light is illuminated
  2. Gasoline smell coming from the vehicle
  3. Rough idling or stalling
  4. Decreased fuel efficiency
  5. Difficulty starting the vehicle

How to Fix P0447 Nissan

  1. Use a scan tool to diagnose the specific cause of the code
  2. Inspect the vent control valve and wiring for any damage or corrosion
  3. Replace the vent control valve if it is faulty
  4. Repair or replace any damaged wiring in the circuit
  5. Clear the code and test the system to ensure the issue has been resolved

Cost to Fix P0447 Nissan

The typical repair cost for a P0447 Nissan code can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to get quotes from multiple shops to ensure a fair price.

What does this mean?

Tech Notes for P0447 Nissan

There is a factory service bulletin for the following Nissan models:

2002 Nissan Altima
2003 Nissan Altima
2004 Nissan Altima
2005 Nissan Altima
2002-2005 Nissan Altima Service Bulletin OBDII Code P0447

When is the Code Detected?

An improper voltage signal is sent to Engine Control Module (ECM) through Evaporative Emission System (EVAP) canister vent control valve.

Need more information about the P0447 Nissan code?

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Need Help with the Code?

Get the P0447 Nissan code diagnosed by a professional: Find a repair shop in your area

Information for Specific Nissan Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0447 Nissan Code

1. What are the common symptoms of OBDII code P0447 in a Nissan vehicle?

The common symptoms of P0447 in a Nissan include the Check Engine Light illuminating on the dashboard, rough idling, decreased fuel economy, and a strong gasoline odor.

2. What does the OBDII code P0447 in a Nissan indicate?

P0447 indicates a fault in the evaporative emission control system vent control circuit, specifically that the circuit is open.

3. What are the possible causes of OBDII code P0447 in a Nissan?

Common causes of P0447 in a Nissan include a faulty vent control valve, damaged wiring or connectors in the vent control circuit, or a malfunction in the evaporative emission control system.

4. How serious is the OBDII code P0447 in a Nissan?

While P0447 may not cause immediate drivability issues, it can negatively impact the vehicle's emissions and fuel efficiency. It is important to address the underlying problem to ensure proper vehicle operation.

5. Can I continue driving my Nissan with OBDII code P0447?

It is generally safe to drive your Nissan with the P0447 code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent further damage to the emission control system.

6. How can I diagnose OBDII code P0447 in my Nissan?

Diagnosing P0447 involves using a scan tool to check for the specific code, inspecting the vent control valve and related components for damage, and testing the circuit for continuity.

7. How can I repair OBDII code P0447 in my Nissan?

To repair P0447, you may need to replace the vent control valve, repair or replace damaged wiring or connectors, or reset the Check Engine Light after fixing the issue causing the fault code.

8. Can I reset the Check Engine Light after fixing OBDII code P0447 in my Nissan?

Yes, once you have addressed the underlying problem causing P0447 and repaired it, you can reset the Check Engine Light using an OBDII scanner or by disconnecting the car's battery for a few minutes.

9. Are there any maintenance tips to prevent OBDII code P0447 in a Nissan?

Regularly inspecting and maintaining the evaporative emission control system components, such as the vent control valve and associated wiring, can help prevent issues like P0447 from occurring.

10. Is it recommended to seek professional help for diagnosing and repairing OBDII code P0447 in a Nissan?

If you are not familiar with automotive diagnostics and repairs, it is advisable to seek professional help from a certified mechanic or dealership to accurately diagnose and fix the issue causing P0447 in your Nissan.

Discuss the causes and fixes for P0447 Nissan OBDII Code

Submit a New Comment

  • My troubleshooting code is P0447, should I start by replacing the solenoid or the vapor canister purge valve? I took the solenoid out and tested it and I can hear the solenoid engaging but who knows if it is engaging all the way? Where should I start?

    Reply to Comment

  • What model and year is your Nissan?

    Reply to Comment

  • 2004 Nissan Titan SE

    Reply to Comment

  • If the connector is OK and there are no obvious wire damage, the EVAP canister vent control valve is more than likely the cause of the problem.

    Reply to Comment

  • Looking on rock auto's website there is a vapor cannister vent solenoid or there is a vapor canister purge valve. Which is it? The code at Auto Zone reads evap canister vent control valve - circuit open probable cause. To me, that says its a solenoid issue or a faulty wiring harness? I just bought a new solenoid and installed it, light goes off during first second or two then kicks on. Does it take time to adjust or should it go off instantly?

    Reply to Comment

  • The system needs to test the system. Try disconnecting the car battery to reset the system.

    Reply to Comment

  • My Nissan Frontier 2004 had both a p0447 and a p1490 trouble codes. It took me some time but I traced it to a wiring problem. Had 12v at the cab splice on the passenger side wiring harness but no power at the canister purge valve and the by-pass cut valve. Pulled new wire and soldered it in place. It wasn't as bad as I thought it was going to be. You'll need a wiring diagram to sort it out. I got mine from my local librarian. Chilton has a reference source that breaks the wiring down by specific trouble code. So check it out.

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  • Thank you for the information!

    Reply to Comment