P0447 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, Purge Control Valve harness is open or shorted, Purge 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 indicates Evaporative Emission Control System Vent Control Circuit Open.
- Common causes
- Common causes include Faulty canister vent control valve, Purge Control Valve harness is open or shorted, Purge 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.
Code P0447 Description
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.
What are the Possible Causes of the DTC P0447?
- Faulty canister vent control valve
- Purge Control Valve harness is open or shorted
- Purge Control Valve electrical circuit poor connection
How to Fix the DTC P0447?
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 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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Information for Specific Makes
- P0447 Hyundai — EVAP System Vent Control Circuit Open
- P0447 Infiniti — Evaporative Emission Control System Vent Control Circuit Open
- P0447 KIA — EVAP Emission System- Vent Control Valve Circuit Open
- P0447 Mercedes-Benz — Evaporative Emission Control System Vent Control Circuit Open
- P0447 Nissan — Evaporative Emission Control System Vent Control Circuit Open
- P0447 Subaru — Evaporative Emission Control System Vent Control Circuit Open
Frequently Asked Questions about P0447 Code
1. What are common symptoms of OBDII code P0447?
The common symptoms of OBDII code P0447 include the check engine light coming on, rough idling, decreased fuel efficiency, and a strong odor of fuel vapors.
2. What does the OBDII code P0447 indicate?
OBDII code P0447 indicates a problem with the Evaporative Emission Control System Vent Control Circuit being open, which can lead to issues with controlling fuel vapors in the vehicle.
3. What are possible causes of OBDII code P0447?
Possible causes of OBDII code P0447 include a faulty vent control valve, damaged wiring or connectors in the vent control circuit, or a malfunctioning PCM (Powertrain Control Module).
4. How can I diagnose the cause of OBDII code P0447?
To diagnose the cause of OBDII code P0447, you can use a scan tool to check for the specific code, inspect the vent control valve and related components for any visible damage, and perform a thorough check of the wiring and connectors in the vent control circuit.
5. Can OBDII code P0447 cause any serious issues with the vehicle?
While OBDII code P0447 may not directly affect the drivability of the vehicle, it can lead to increased emissions, decreased fuel efficiency, and potential environmental harm if not addressed promptly.
6. How can I repair OBDII code P0447?
To repair OBDII code P0447, you may need to replace the vent control valve, repair any damaged wiring or connectors in the circuit, or reset the PCM. It is recommended to consult a professional mechanic for accurate diagnosis and repair.
7. Is it safe to continue driving with OBDII code P0447 present?
It is generally safe to continue driving with OBDII code P0447 present, but it is important to address the issue promptly to prevent any further damage to the vehicle's emission control system.
8. Can a DIY enthusiast fix OBDII code P0447?
Depending on your level of automotive knowledge and experience, a DIY enthusiast may be able to fix OBDII code P0447 by following repair guides and using the necessary tools. However, seeking professional help is advised for accurate diagnosis and repair.
9. How much does it cost to repair OBDII code P0447?
The cost to repair OBDII code P0447 can vary depending on the specific cause of the issue, the labor rates in your area, and the cost of replacement parts. It is recommended to obtain quotes from different mechanics to compare prices.
10. How often does OBDII code P0447 occur in vehicles?
OBDII code P0447 can occur in vehicles of various makes and models, especially in older vehicles or those with high mileage. Regular maintenance and inspections can help prevent issues related to the Evaporative Emission Control System.
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