P0447 Nissan:Evaporative Emission Control System Vent Control Circuit Open
If you own a Nissan and have encountered the P0447 code, you may be wondering . This code refers to a problem with the evaporative emission control system vent control circuit, which can cause issues with your vehicle’s emissions. Fortunately, there are steps you can take to diagnose and repair the issue, ensuring your Nissan runs smoothly and efficiently.
In this article, we’ll explore the P0447 code in more detail and provide some tips for resolving the problem.
Key Takeaways:
Meaning: P0447 code indicates an open circuit in the evaporative emission control system vent control circuit.
Causes: Faulty vent control valve, damaged wiring or connectors, malfunctioning PCM, or a clogged charcoal canister.
Symptoms: Check Engine Light on, rough idle, decreased fuel efficiency, and difficulty starting the engine.
Fixes: Replace the vent control valve, repair or replace damaged wiring or connectors, clean or replace the charcoal canister, or reprogram the PCM.
P0447 Code Nissan Meaning
The P0447 code in a Nissan vehicle indicates a problem with the evaporative emission control system vent control circuit. This circuit is responsible for controlling the flow of fuel vapors from the fuel tank to the engine. When the circuit is open, it means that there is a break in the electrical connection, which can cause the system to malfunction and trigger the check engine light.
Signs and Symptoms of P0447 Code in Nissan
Here are some of the signs and symptoms of the P0447 code in Nissan:
- Check Engine Light: The most common symptom of the P0447 code is the illumination of the check engine light on the dashboard. This light indicates that there is a problem with the vehicle’s emissions system and should not be ignored.
- Decreased Fuel Efficiency: A malfunctioning evaporative emission control system can cause a decrease in fuel efficiency. This is because the system is designed to capture and recycle fuel vapors, which can be used to power the engine. When the system fails, these vapors are released into the atmosphere, resulting in a loss of fuel efficiency.
- Strong Fuel Odor: If you notice a strong fuel odor coming from your vehicle, it could be a sign of a problem with the evaporative emission control system. This odor is caused by the release of fuel vapors into the atmosphere, which can be dangerous and should be addressed immediately.
- Difficulty Starting the Engine: A malfunctioning evaporative emission control system can also cause difficulty starting the engine. This is because the system is designed to regulate the flow of fuel vapors into the engine, which can affect the engine’s ability to start and run smoothly.
- Failed Emissions Test: If your vehicle fails an emissions test, it could be due to a problem with the evaporative emission control system. This system is responsible for reducing the amount of harmful pollutants released into the atmosphere, and a malfunctioning system can cause your vehicle to fail an emissions test.
P0447 Code Nissan Causes
- Faulty vent control valve: The vent control valve is responsible for controlling the flow of air into and out of the fuel tank. If this valve is faulty, it can cause the P0447 code to appear.
- Open or shorted vent control valve circuit: If there is an open or shorted circuit in the vent control valve, it can cause the P0447 code to appear.
- Faulty PCM: The PCM (powertrain control module) is responsible for controlling the evaporative emission control system. If the PCM is faulty, it can cause the P0447 code to appear.
- Loose or damaged wiring: If there is a loose or damaged wire in the vent control valve circuit, it can cause the P0447 code to appear.
- Faulty fuel tank pressure sensor: The fuel tank pressure sensor is responsible for monitoring the pressure inside the fuel tank. If this sensor is faulty, it can cause the P0447 code to appear.
Fixes for P0447 Code Nissan
Here are some of the fixes for the P0447 code:
- Replace the vent control valve: The vent control valve is responsible for regulating the flow of air into and out of the evaporative emission control system. If this valve is faulty, it can cause the P0447 code to appear. Replacing the valve should resolve the issue.
- Repair damaged wiring: If the wiring that connects the vent control valve to the PCM is damaged or corroded, it can cause the P0447 code to appear. Repairing or replacing the wiring should fix the problem.
- Replace the PCM: In some cases, the P0447 code may be caused by a malfunctioning PCM. If this is the case, replacing the PCM should resolve the issue.
- Clean or replace the charcoal canister: The charcoal canister is an important component of the evaporative emission control system. If it becomes clogged or damaged, it can cause the P0447 code to appear. Cleaning or replacing the canister should fix the problem.
- Check the fuel cap: A loose or damaged fuel cap can cause the P0447 code to appear. Make sure the fuel cap is tightened properly and in good condition.
How Much Will It Cost to Fix P0447 Code on Nissan?
The P0447 code on Nissan indicates a problem with the evaporative emission control system vent control circuit. This code is usually caused by a malfunctioning vent control valve or a damaged wiring harness. If left unaddressed, it can lead to decreased fuel efficiency and increased emissions.
The cost to fix the P0447 code on a Nissan can vary depending on the severity of the issue and the location of the repair shop. On average, the cost can range from $100 to $500. However, if the problem is more severe and requires the replacement of the vent control valve or the wiring harness, the cost can increase to $1,000 or more.
Possible Causes and Fixes of Code P0447 Nissan
| Possible Cause | Fix | Cost to Fix |
|---|---|---|
| Failed EVAP vent control valve | Replace EVAP vent control valve | $100-$200 |
| Open or shorted circuit in EVAP vent control valve wiring | Repair or replace wiring as necessary | $100-$300 |
| Failed EVAP canister purge volume control solenoid valve | Replace EVAP canister purge volume control solenoid valve | $100-$200 |
| Open or shorted circuit in EVAP canister purge volume control solenoid valve wiring | Repair or replace wiring as necessary | $100-$300 |
| Failed PCM (rare) | Replace PCM | $500-$1000 |
How Serious is the P0447 Code in Nissan?
The P0447 code in Nissan indicates a problem with the evaporative emission control system vent control circuit. This code is not considered to be a serious issue, but it can cause problems with the vehicle’s emissions and fuel economy.
If left untreated, the P0447 code can lead to other issues with the vehicle’s emissions system, which can cause the vehicle to fail an emissions test. Additionally, the code can cause the vehicle to run less efficiently, which can lead to decreased fuel economy and increased emissions.
While the P0447 code is not an emergency, it is important to have it diagnosed and repaired as soon as possible to prevent further damage to the vehicle’s emissions system and to ensure that the vehicle is running at peak efficiency.
Can You Still Drive with the P0447 Code on Your Nissan?
If you have a Nissan and the P0447 code appears on your dashboard, you may wonder if it’s safe to continue driving your vehicle. The good news is that this code doesn’t indicate a serious problem that can affect your car’s performance or safety.
The P0447 code means that there’s an issue with the evaporative emission control system vent control circuit. This circuit is responsible for regulating the flow of fuel vapors from the fuel tank to the engine. When it’s open, it means that the circuit is not functioning properly, and the engine control module (ECM) can’t control the vent valve as it should.
Conclusion
The P0447 code in Nissan vehicles indicates a problem with the evaporative emission control system vent control circuit being open. This can cause issues with emissions and potentially harm the environment. To fix this issue, it is recommended to check the wiring and connections for any damage or corrosion. If necessary, the vent control valve may need to be replaced. It is important to address this issue promptly to ensure the vehicle is running efficiently and safely.
FAQ
What is P0447 code in Nissan?
P0447 code in Nissan refers to a fault in the evaporative emission control system vent control circuit, indicating that the circuit is open.
What are the symptoms of P0447 code in Nissan?
The symptoms of P0447 code in Nissan may include the check engine light turning on, decreased fuel efficiency, and difficulty starting the engine.
What causes P0447 code in Nissan?
The common causes of P0447 code in Nissan are a faulty vent control valve, damaged wiring or connectors in the vent control circuit, or a malfunctioning PCM.
How to diagnose P0447 code in Nissan?
To diagnose P0447 code in Nissan, a mechanic will use an OBD-II scanner to retrieve the code and inspect the vent control valve, wiring, and connectors for any damage or corrosion. They may also perform a smoke test to check for leaks in the evaporative emission system.
How to fix P0447 code in Nissan?
The fix for P0447 code in Nissan may involve replacing the vent control valve, repairing or replacing damaged wiring or connectors, or replacing the PCM if it is found to be faulty. A mechanic may also need to clear the code and perform a test drive to ensure the issue is resolved.
Learn about more p codes in Nissan here.
