AutoCodes – Nissan – P0447 2003 Nissan Altima Sedan

P0447 2003 Nissan Altima Sedan Code - Evaporative Emission Control System Vent Control Circuit Open

Quick Answer

The Evaporative Emission System (EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. Common causes include Faulty Canister Vent Control Valve, Canister Vent Control Valve harness is open or shorted, Canister Vent Control Valve electrical circuit poor connection. 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 2003 Nissan Altima Sedan indicates Evaporative Emission Control System Vent Control Circuit Open.
Common causes: Common causes include Faulty Canister Vent Control Valve, Canister Vent Control Valve harness is open or shorted, Canister Vent Control Valve electrical circuit poor connection.
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.

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Code Popularity 4,797

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 23, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0447 2003 Nissan Altima Sedan 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 components.This 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 P0447 2003 Nissan Altima Sedan - Evaporative Emission Control System Vent Control Circuit Open - AutoCodes.com — P0447 2003 Nissan Altima Sedan Code - Evaporative Emission Control System Vent Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P0447 2003 Nissan Altima Sedan?

Faulty Canister Vent Control Valve
Canister Vent Control Valve harness is open or shorted
Canister Vent Control Valve electrical circuit poor connection

How to Fix the DTC P0447 2003 Nissan Altima Sedan?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

There is a factory service bulletin for the 2003 Nissan Altima:
2003 Nissan Altima Factory Service Bulletin OBDII Code P0447

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0447 2003 Nissan Altima Sedan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 2003 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0447 in a 2003 Nissan Altima Sedan?

The common symptoms of code P0447 in a 2003 Nissan Altima Sedan include the check engine light coming on, rough idling, decreased fuel efficiency, and a strong smell of gasoline.

2. What causes the OBDII code P0447 in a 2003 Nissan Altima Sedan?

The main cause of OBDII code P0447 in a 2003 Nissan Altima Sedan is a malfunction in the evaporative emission control system vent control circuit, which can be due to a faulty vent control valve, damaged wiring, or a loose connection.

3. How can I diagnose OBDII code P0447 in my 2003 Nissan Altima Sedan?

Diagnosing code P0447 involves using a scan tool to read the code, checking the vent control valve for proper operation, inspecting the wiring for damage or loose connections, and conducting a smoke test to detect any leaks in the evaporative emission control system.

4. Can I drive my 2003 Nissan Altima Sedan with OBDII code P0447?

It is generally safe to drive your 2003 Nissan Altima Sedan with code P0447, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent potential damage to the vehicle's emission control system.

5. How do I repair OBDII code P0447 in my 2003 Nissan Altima Sedan?

To repair OBDII code P0447 in a 2003 Nissan Altima Sedan, you may need to replace the vent control valve, repair any damaged wiring, or secure any loose connections in the evaporative emission control system vent control circuit.

6. Is OBDII code P0447 in a 2003 Nissan Altima Sedan a serious issue?

While code P0447 is not typically considered a serious issue that affects the drivability of the vehicle, it is important to address the problem to ensure proper functioning of the emission control system and maintain fuel efficiency.

7. Can a DIY enthusiast fix OBDII code P0447 in a 2003 Nissan Altima Sedan?

Depending on your level of automotive repair experience, you may be able to address code P0447 in a 2003 Nissan Altima Sedan by following repair guides and utilizing basic tools. However, complex issues may require professional assistance.

8. How long does it take to repair OBDII code P0447 in a 2003 Nissan Altima Sedan?

The time required to repair code P0447 in a 2003 Nissan Altima Sedan can vary based on the specific cause of the issue and the complexity of the repair. In general, it may take a few hours to a full day to diagnose and fix the problem.

9. Will resetting the check engine light resolve OBDII code P0447 in a 2003 Nissan Altima Sedan?

Simply resetting the check engine light will not resolve code P0447 in a 2003 Nissan Altima Sedan. It is essential to diagnose the underlying issue causing the code and address it accordingly to prevent the light from coming back on.

10. What is the typical cost to repair OBDII code P0447 in a 2003 Nissan Altima Sedan?

The cost to repair OBDII code P0447 in a 2003 Nissan Altima Sedan can vary depending on the specific repair needed, the labor rates in your area, and whether you choose to address the issue yourself or take it to a professional mechanic. Costs may range from $100 to $500 or more.