2003 Dodge Caravan Repair Question
2003 dodge caravan emission codes po442,po455,po456
These faults are telling you that you have an evaporative system leak. Here is what the book suggests as possible problems.
If there is a leak larger than 0.040 inch and smaller than 0.080 inch in the evaporative system.
Good trip equal to zero
Verify evaporative emission system leak
Evaporative emission leak detection
EVAP purge solenoid leaks/stuck open
Intermittent LDP monitor failure
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