P0449
EVAP System Vent Valve Control Circuit/Open
P0449 is an OBD-II diagnostic trouble code meaning: EVAP System Vent Valve Control Circuit/Open. Common causes: open or short circuit in evap purge valve wiring harness, evap purge solenoid valve malfunction. Estimated repair cost: $33–89.
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- The smell of gasoline in or near the car
Causes
- Open or short circuit in EVAP purge valve wiring harness
- EVAP purge solenoid valve malfunction
- Problems with connectors or contact corrosion
- Malfunction of the engine control unit (rare)
How to Fix
- Check the integrity of the EVAP purge valve wiring harness and connectors.
- Check the resistance of the purge valve with a multimeter
- Replace EVAP purge valve if faulty
- Clean or replace damaged connectors
- Reset the error and check if it returns
Related codes
Error P0449 by Vehicle Brand
FAQ
What does the P0449 code mean?
P0449 is an OBD-II diagnostic trouble code that indicates: EVAP System Vent Valve Control Circuit/Open
What causes a P0449 error code?
The most common causes of P0449 include: Open or short circuit in EVAP purge valve wiring harness; EVAP purge solenoid valve malfunction; Problems with connectors or contact corrosion; Malfunction of the engine control unit (rare).
How do I fix a P0449 diagnostic trouble code?
To fix P0449: Check the integrity of the EVAP purge valve wiring harness and connectors.. Check the resistance of the purge valve with a multimeter. Replace EVAP purge valve if faulty. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0449?
Limited driving only, diagnose soon
How much does it cost to fix P0449?
The estimated repair cost for P0449 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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