Powertrain
generic / SAE
P04EE
EVAP System Very Small Leak Detected Fuel Tank Side
Same as P04EA but at the most sensitive leak threshold - typically the OBD-II 0.020-inch (~0.5 mm) test. The system holds pressure for some time but loses it slower than the diagnostic limit allows; usually fuel cap O-ring fatigue or microcracks in a hose.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / EE
Possible causes
- Fuel cap O-ring aged or stiffened high
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: 25–200 €
- Estimated time: 0.2–1 h
- Component: fuel cap
- Component: fuel sender seal
- Component: evap hose tank side
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012