P0449 means evap vent valve/solenoid circuit. Electrical fault in the vent valve solenoid circuit — the valve that seals the EVAP system for self-testing.
You can keep driving — get it checked when convenient.
Electrical fault in the vent valve solenoid circuit — the valve that seals the EVAP system for self-testing.
Most common.
Harness damage.
Moisture intrusion.
Check first.
Rare.
Typically $100–$400
Vent solenoid replacement typically $150–$400. Estimates vary by vehicle. Costs are estimates and vary by vehicle, location, and shop.
Safe to drive. Emissions-only; schedule when convenient.
Typically $100–$400. Vent solenoid replacement typically $150–$400. Estimates vary by vehicle.
You can keep driving — get it checked when convenient.
The most common cause is failed vent solenoid. Most common.