P0447: EVAP system vent control circuit open
You can keep driving. Get it checked when convenient.
Can I drive with P0447?
Yes, you can keep driving. Vent solenoid disconnected or has broken wire; vehicle is usually safe to drive for a short time, but get it checked.
What does P0447 mean?
P0447 stands for Evaporative Emission Control System Vent Control Circuit Open.
Symptoms you may notice
- Steady check engine light with minimal drivability symptoms
- Normal engine power, idle, and acceleration
- Possible faint gasoline vapor smell near gas cap
How much does it cost to fix?
Repair costs for code P0447 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Broken wire in the rear underbody harness
- Burnt out vent valve coil
- Unplugged canister vent valve
- Corroded harness pins
What to do next
- Check the rear harness going to the charcoal canister above the rear suspension.
- Test resistance across the vent solenoid terminals.
- Repair any severed wires or replace the vent solenoid.
Last updated: October 2026
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General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P0447 means the computer cannot establish an electrical circuit with the rear canister vent valve. Road salt, gravel, and ice frequently snag the low-hanging wires on SUVs and pickup trucks. The car runs and handles normally, but the dash light will remain on until repaired.