AutoCodes – Nissan – P0447 2005 Nissan Altima Sedan

P0447 2005 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 2005 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 4,369
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 23, 2020
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Code P0447 2005 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 2005 Nissan Altima Sedan - Evaporative Emission Control System Vent Control Circuit Open - AutoCodes.com
P0447 2005 Nissan Altima Sedan Code - Evaporative Emission Control System Vent Control Circuit Open

What are the Possible Causes of the DTC P0447 2005 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 2005 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0447 2005 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 2005 Nissan Altima Sedan Code

1. What does the OBDII code P0447 mean on a 2005 Nissan Altima?

P0447 indicates an issue with the Evaporative Emission Control System Vent Control Circuit, specifically that the circuit is open or not functioning properly.

2. What are the symptoms of the P0447 code on a 2005 Nissan Altima?

Common symptoms include an illuminated Check Engine Light, increased fuel odor, and potential difficulty passing an emissions test.

3. What causes the P0447 code on a 2005 Nissan Altima?

Common causes include a faulty vent control valve, damaged wiring or connectors, or corrosion in the vent control circuit.

4. Can a loose or damaged gas cap cause the P0447 code?

No, a loose or damaged gas cap is unlikely to cause P0447, as this code is specifically related to the vent control circuit, not the fuel tank seal.

5. How do I diagnose the P0447 code on a 2005 Nissan Altima?

Start by inspecting the vent control valve, wiring, and connectors for damage or corrosion. Use a multimeter to test the circuit for continuity.

6. How do I fix the P0447 code on a 2005 Nissan Altima?

Repairs may include replacing the vent control valve, repairing damaged wiring, or cleaning corroded connectors in the vent control circuit.

7. Is it safe to drive with the P0447 code on my 2005 Nissan Altima?

Yes, it is generally safe to drive, but prolonged neglect may lead to increased emissions and potential damage to the EVAP system.

8. How much does it cost to fix the P0447 code on a 2005 Nissan Altima?

Repair costs can vary but generally range from $100 to $300, depending on whether you replace the vent control valve or repair wiring.

9. Can a faulty vent control valve cause the P0447 code?

Yes, a faulty vent control valve is one of the most common causes of this code and may need replacement.

10. Will clearing the code with a scan tool fix the P0447 issue?

Clearing the code will turn off the Check Engine Light temporarily, but the underlying issue must be repaired to prevent the code from returning.

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