You have a small EVAP leak. What needs to be done is a smoke test to find the leak. You probably have this code...P0442 DODGE - Evaporative Emission Control Small Leak Detected...Possible causes; Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close, Foreign matter caught in fuel filler cap, EVAP canister or fuel tank leaks, EVAP system hose leaking Fuel tank leaking...Watch this video on diagnosis and repair.... https://youtu.be/KseR52wJGQA
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