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Old 09-17-2010, 09:10 AM
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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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Your mechanic is correct the P0300 code is set when there is a multiple misfire, without knowing the cause, but the P1320 is more specific to the ignition coils.

The problem is to find out which coil (s) is the bad one, most Nissan vehicle owner replaced all six coils at the same time.
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