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My check engine light came on and the code is P0326 knock sensor. Before jumping in to change the sensor, what should I check or do to see if it's a problem other than a faulty sensor? The vehicle is a 2010 Chevy Malibu LS.

Vehicle: 2010 Chevy Malibu LS 2.4L

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Check the cooling system ,a overheating system will cause a knock sensor to max out and turn the  Check engine light on, next is oil level,check the oil level,and use the proper weight.

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