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2004 santa fe 2.4

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  #11  
Old 10-08-2018, 02:49 PM
Senior Member
Join Date: Sep 2013
Posts: 169
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Kevin,
What we are trying to pass on is;
Sometimes an alternator will generate spikes or wild fluctuations that can only be caught on a graphing meter or scope.
These screwy occurrences can cause the PCM to throw false codes and P0340 is one of them.
 
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