Engine-Codes - Generic - P0447

P0447 Code - Evaporative Emission Control System Vent Control Circuit Open

- Code Popularity: 52,576 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0447?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty canister vent control valve
  • Purge Control Valve harness is open or shorted
  • Purge Control Valve electrical circuit poor connection

Code Tech Notes

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

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How to Fix the DTC P0447?

Check 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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

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

When is the 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 Possible Symptoms?

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

What Does the P0447 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.
P0447 Code - Evaporative Emission Control System Vent Control Circuit Open

Need more Information on the Code?

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Code P0447 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

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