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while driving car mada a noise similar to what a bottle of soda sounds like if you shake it up & open it. next day check engine lifgt is on & i heard a noise like something was hitting something like it was flapping in the wind. no difference in the way the car runs.

Vehicle: 2004 Buick Century

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Hi there,

This code indicates a leak in the EVAP system. Here is a list of possible causes.

P0442 BUICK - Evaporative Emission Control System Leak Detected Small Leak

Read more: https://www.autocodes.com/p0442_buick.html

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