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I cleared EGR problem. Do I need to clear the check engine light?

(1996 Pontiac Grand Am)
in Victorville, CA on January 20, 2012
Had code P0401. Cleaned carbon out of passageway from EGR to throttle body (intake) account insufficient flow. Do I need to clear the check engine light or will it go out on its own? I need to get the car smogged.
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