Powertrain
generic / SAE
P04F1
EVAP System Purge Line Performance
A general performance fault on the EVAP purge line - flow does not match the requested rate, without specifying which segment. Usually a partially blocked line, a stuck purge valve, or a leak that decouples flow from valve commands.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / F1
Possible causes
- Purge line partially blocked high
- Purge valve responds slowly 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: medium
- DIY: possible
- Estimated cost: 120–450 €
- Estimated time: 0.8–2 h
- Component: evap purge line
- Component: evap purge valve
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012