P0447 Code - Evaporative Emission Control System Vent Control Circuit Open

What Does P0447 Mean?

This indicates that a portion of the EVAP control system is no longer functioning properly. The EVAP system consists of components including (but not limited to) the gas cap, fuel lines, charcoal canister, purge valve, system pressure and flow sensors, electrical wiring and connectors, vacuum lines, the fuel tank, and fuel vapor hoses.

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What are the common causes of P0447 ?

• A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
• Dirty air cleaner element Damaged DPF
• Faulty IMRC actuator relay (if equipped)

How do you troubleshoot P0447 ?

Repair/replacement of:

• Purge control solenoid
• Charcoal canister
• Vacuum lines and hoses
• Fuel flow and pressure sensors
• Fuel cap

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