P0447 Subaru 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 Subaru 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 Subaru 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 Subaru?
- 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 Subaru?
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 Subaru 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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Frequently Asked Questions about P0447 Subaru Code
1. What are the common symptoms of OBDII code P0447 in a Subaru?
- Common symptoms include the Check Engine light illuminating on the dashboard, decreased fuel efficiency, and possible issues with the vehicle's emissions system.
2. What does the OBDII code P0447 Subaru indicate?
- This code indicates a problem with the Evaporative Emission Control System Vent Control Circuit being open, which may lead to emissions control issues.
3. What are possible causes of OBDII code P0447 in a Subaru?
- Possible causes include a malfunctioning vent control solenoid, damaged wiring in the vent control circuit, or a faulty PCM (Powertrain Control Module).
4. How can I diagnose the cause of OBDII code P0447 in my Subaru?
- To diagnose the issue, you can perform a visual inspection of the vent control circuit, test the vent control solenoid, and use an OBDII scanner to retrieve and analyze the code data.
5. Can I continue driving my Subaru with OBDII code P0447 present?
- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent potential emissions-related problems and ensure optimal vehicle performance.
6. How can I repair OBDII code P0447 in my Subaru?
- Repair options may include replacing the vent control solenoid, repairing damaged wiring in the vent control circuit, or resetting the PCM after fixing the issue.
7. Will resetting the Check Engine light resolve OBDII code P0447 in my Subaru?
- Simply resetting the Check Engine light will not fix the underlying issue causing the code. Proper diagnosis and repair are necessary to address OBDII code P0447 effectively.
8. Can a DIY enthusiast easily fix OBDII code P0447 in a Subaru?
- Depending on your skill level and access to tools, it is possible for a DIY enthusiast to tackle this repair. However, it is recommended to follow a detailed repair guide or seek professional assistance if unsure.
9. How much can I expect to pay for repairing OBDII code P0447 in a Subaru?
- The cost of repair can vary depending on the specific cause of the code and whether you choose to fix it yourself or take your Subaru to a mechanic. Costs may range from a few dollars for parts to a few hundred dollars for professional repair.
10. Is it necessary to pass emissions tests after fixing OBDII code P0447 in my Subaru?
- Yes, it is important to ensure that your Subaru passes emissions tests after resolving OBDII code P0447 to maintain compliance with environmental regulations and ensure the vehicle's proper functioning.
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