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Q:

check engine light on 2002 Dodge Caravan

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
my check engine light keeps coming on it indicated a small emissions leak we have replaced the gas cap and it just came back on
(2) Answers
Here is some good info about the P0442 Code, or small evaporative system leak:
http://repairpal.com/OBD-Code-P0442
go to any repair shop that performs leak test with smoke,this will find your leak and coarse of action to take