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Hi guys i had bad spark plug gaps in my overland 2004,does bad spark plug had any relation to make p0325 knock sensor issue i had rest the code from the ecm but it return come back only on hard driving with loads on tough roads ,i read some threads that a clogged catalytic converter make also this code any ideas ,Thanks to all in advance.
 

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The beast from Brazil
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Plugs should not have caused this fault message. The code means that Knock Sensor #1 Circuit Knock sensor signal above or below minimum acceptable threshold voltage. This means an open circuit, short circuit or a bad sensor. Since it only appears on tough roads, i would start checking the wiring and connectors, especially if there is not a wire shaved through and making contact with a metal part.
 

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grand cherokee MY13
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Whats a spark plug
Is that something new
 

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The beast from Brazil
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