P0447
EVAP System Vent Control Circuit Open
P0447 is an OBD-II diagnostic trouble code meaning: EVAP System Vent Control Circuit Open. Common causes: broken or damaged wiring harness, evap vent valve malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Possible smell of gasoline
- Engine performance deterioration
- Increased fuel consumption
Causes
- Broken or damaged wiring harness
- EVAP vent valve malfunction
- Problems with the control relay
- Contact corrosion
- Engine control unit (ECU) malfunction
How to Fix
- Check the wiring harness for breaks and damage
- Check EVAP vent valve resistance
- Check the operation of the control relay
- Clean contacts from corrosion
- Replace valve or wiring harness if necessary
- Reset the error and check the system
Related codes
Error P0447 by Vehicle Brand
FAQ
What does the P0447 code mean?
P0447 is an OBD-II diagnostic trouble code that indicates: EVAP System Vent Control Circuit Open
What causes a P0447 error code?
The most common causes of P0447 include: Broken or damaged wiring harness; EVAP vent valve malfunction; Problems with the control relay; Contact corrosion.
How do I fix a P0447 diagnostic trouble code?
To fix P0447: Check the wiring harness for breaks and damage. Check EVAP vent valve resistance. Check the operation of the control relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0447?
Limited driving only, diagnose soon
How much does it cost to fix P0447?
The estimated repair cost for P0447 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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