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2009 Jeep Patriot Question: 2009 Jeep Patriot check engine light on, no code

 

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TZone570, Henryville, PA, June 25, 2013, 12:22
 Rookie

Do you need to turn the car on to get the code? Or can it register with just power on? I had someone put the diagnostic machine on to read the code, but he did not turn the engine over.

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