Powertrain
generic / SAE
P04E0
EVAP System Purge Control Valve A Stuck Closed
Same as P04AF on EVAP purge valve A. The evaporative system captures fuel vapor from the tank and purges it into intake; leaks or stuck purge valves leak hydrocarbons and cause emissions failures.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / E0
Possible causes
- Valve stuck closed high
- Carbon or debris buildup preventing free movement low
- Component wear with age - mechanical play low
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: 120–350 €
- Estimated time: 0.6–1.5 h
- Component: evap purge valve a
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012