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.
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.
Common causes
- high
Fuel cap O-ring aged or stiffened
One of the most commonly reported causes for this code — check this first.
Typical part cost: $30-220
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
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Frequently asked questions
What does P04EE mean?
P04EE means "EVAP System Very Small Leak Detected Fuel Tank Side". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P04EE?
fuel cap o-ring aged or stiffened — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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