Powertrain
generic / SAE
P0449
Evaporative Emission System Vent Valve/Solenoid Circuit Malfunction
A general electrical fault was detected in the EVAP vent valve/solenoid control circuit. Without a working vent valve the EVAP leak test cannot complete and the system may remain not-ready.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 49
Possible causes
- Vent valve electrically failed high
- Wiring or connector fault medium
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 40–300 €
- Estimated time: 0.3–1.5 h
- Component: evap vent valve
- Component: vent valve wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012