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Old 07-27-2006, 08:32 PM
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NissanTech NissanTech is offline
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2004 Xterra
 
Join Date: Jun 2005
Location: California
Age: 52
Posts: 12,536
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Welcome to Nissanhelp.com forums!!

There are a few bulletins that deal with rough idle. You can look the list of bulletins here:

http://www.nissanhelp.com/Ownership/Sentra/EngineP.htm

The P1493 code is for the purge control solenoid valve. If the solenoid valve is not working properly and stays open when is not needed, it will trigger the P0303 code.
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