Engine-Codes - Subaru - P0447 Subaru

P0447 Subaru Code - Evaporative Emission Control System Vent Control Circuit Open

- Code Popularity: 26,295 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code 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 P0447 Subaru Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Code P0447 Subaru Tech Notes

Before replacing any parts, check for damage EVAP canister and for loose hoses from the vent control valve to the canister.

|What is the Cost to Diagnose the Code P0447 Subaru?

Labor: 1.0

The cost to diagnose the P0447 Subaru code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|When is the P0447 Subaru Code Detected?

An improper voltage signal is sent to Engine Control Module (ECM) through Evaporative Emission System (EVAP) canister vent control valve.

|What are Code P0447 Subaru Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P0447 Subaru Code Mean?

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.
Evaporative Emission Control System Vent Control Circuit Open

|Need more Information on the P0447 Subaru Code?

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|Need Help with the P0447 Subaru Code?

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