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2003 Subaru Forester w/ 158k miles. Original gas cap.

Both PO442 AND PO442pd came up on my OBD reader.  Any tips?
Vehicle: 2003 Subaru Forester x 2.5l engine

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P0442 Evaporative emission control (small leak)

Use another fuel cap , fuel cap seal do wear out.

 Fuel cap do wear out, the best route is replace the fuel cap.

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