Code result
P04EB
EVAP System Small Leak Detected Fresh Air Side
Moderate severity
What it means
Same as P04EA but on the fresh-air side - the path between vent valve and atmosphere is not sealing completely during the active test phase.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Vent valve does not seal in test mode
highOne of the most commonly reported causes for this code — check this first.
Hose porous or cracked
mediumA plausible cause — test and verify before replacing parts.
Related help
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