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I got a 2006 jeep commander limited 5.7L Engine. I love my Jeep. My Engine light keep on comming on, Took it to the dealer they replace the 02 downstream sensor also changed PCM. It seem like when it get cold the engine light comes on, also when it cold a whinning sound when engine first start up. Dose anyone have the same problem? How could I reset the the engine computer to see if the light would go off. Thank in advance
:bowdown:
 

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The fact that the light keeps coming on is a warning, I would not reset it until you discover the problem.
 

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What code did you get? Just curious.
 
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