Code PO442 Evap Emmision control system leak (small) on 2002 Kia Spectra

My check engine light has been on forever! I get it code pulled and they tell me probably gas cap I've checked the gas cap. I can not smog my car I need to know what other things it could be and some idea of the cost to repair.

Asked by for the 2002 Kia Spectra
you need a real diag from a real shop who will test the system and give you a bid.

1 more answer
There is a very good RepairPal Encyclopedia article that would give you more details about this On Board Diagnostic Code, including common misdiagnoses and common tests;

Get help from a technician;