2001 Buick Century Check Engine Light On Took Autozone Code Brings Reason Egr

2001 BUICK CENTURY
170,000 MILES
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LINDAWHITEVANNATTER
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my check engine light is on. I took it to autozone the code it brings up for the reason of the light is the egr valve. I have changed the valve and had the code reset . it worked for maybe a day but it is back on any suggestions
Dec 3, 2012 at 5:30 PM
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SATURNTECH9
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I really need the exact code numbers not code descriptions you have there is more then one egr code for too much flow not enough flow etc.
Dec 3, 2012 at 5:33 PM
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SATURNTECH9
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Also which engine you have?
Dec 3, 2012 at 5:33 PM
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