Thread: Po440
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Old 09-17-2010, 06:43 PM   #7
clutch1
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It's a "large EVAP leak" code, most often caused by the gas cap.

BUT could also be caused by...

-rusted filler neck not sealing properly with gascap
-gascap's internal mechanism failed and broke
-broken vent solenoid
-an actual large hole/split hose somewhere in the system.

Gotta get out the test equipment if the gascap doesn't fix it.
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