P0449Low urgency
EVAP Vent Valve/Solenoid Circuit
Emission · EVAP System
✅ Safe to drive. EVAP system efficiency is reduced and an emissions test failure is likely. Service within 2–4 weeks.
What this means
The EVAP vent solenoid circuit has a fault — open, short, or failed component. The vent valve controls fresh air intake into the charcoal canister during purge.
Likely causes
- Failed vent solenoidMost common
- Wiring faultCommon
- Corroded connector at canisterCommon
Estimated repair cost
EVAP vent solenoid$60 – $200
Wiring/connector repair$80 – $200
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Frequently asked questions about P0449
What does P0449 mean?
The EVAP vent solenoid circuit has a fault — open, short, or failed component. The vent valve controls fresh air intake into the charcoal canister during purge.
Is P0449 serious?
Safe to drive. EVAP system efficiency is reduced and an emissions test failure is likely. Service within 2–4 weeks.
How much does it cost to fix P0449?
Repair costs for P0449 range from $60 – $200 depending on the root cause and your vehicle.
Can I drive with P0449?
Yes, the vehicle is safe to drive. Schedule a repair at your convenience.