The Lemon IndexThe EVAP vent valve circuit has an electrical fault.
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
Failed vent solenoid. Then: wiring fault.
Owners named P0449 in 15 complaints to the U.S. government, most often on the Hyundai Sonata.
Cars owners report it on
Complaints that name P0449, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2011 Hyundai Sonata
The details
What P0449 means
The EVAP vent valve circuit has an electrical fault.
Can I drive with P0449?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
33% of the owner complaints that name P0449 also say the car stalls or shuts off. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P0449
- Failed vent solenoid
- Wiring fault
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Stalls or shuts off: 33% of complaints
- Warning lights and electrical faults: 20% of complaints
- Shakes, runs rough or misfires: 20% of complaints
- Brakes or ABS act up: 13% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report P0449 most
2011 Hyundai Sonata (3).
Related codes
P0448 P0446 P0445 P0443 P0442 P0441 P0440 P0451
Quick answers
What does P0449 mean?
Evaporative Emission System Vent Valve/Solenoid Circuit. The EVAP vent valve circuit has an electrical fault.
Can I drive with P0449?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
What causes P0449?
Failed vent solenoid; Wiring fault.
Counts: NHTSA owner complaints whose text names P0449. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.