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Check engine light comes on, once or twice a year. What could it be?

(2007 Saturn Sky)
in Pottstown, PA on July 08, 2013
Diagnostic test showed something to do with the cam shaft, but car runs perfectly.
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Popular Answer
of Greg's Orange Auto on July 09, 2013
seek complete diag from your mech and post codes so we can adv
This could be signs of failing camshaft sensor. Have it diagnosed to prevent breakdowns.
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