P0325 code on 02 MDX but I have already replaced the knoc...

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If the knock sensor is good then you need to test the wiring and the PCM circuits per the attached diagnostic steps. This will confirm if the issue is with a short in the knock sensor sub harness, the wiring harness or a bad PCM. Everything you need to test the knock sensor circuit is attached. I've included the engine wiring diagram, connector pinouts for the PCM, how to disconnect the PCM to access the wiring harness, knock sensor sub harness illustration and the step by step diagnostic procedure for P0325. We will be using a multi-meter to perform these tests. If you are not familiar with how to use a multi-meter then follow the link below to watch a video about multi-meter basics: [https://www.youtube.com/watch?v=k2LgvmWNVwc](https://www.youtube.com/watch?v=k2LgvmWNVwc) I’m glad that I was able to answer your question today. My goal is to ensure you receive a 5 STAR experience. Once you’re satisfied with my answer please take the time to rate me 5 stars at the top of your computer screen or by following the link on your phone. These ratings are extremely important to us experts. Tips are never expected by greatly appreciated as they make up a large part of our income. If you have further questions please request me by opening a new question and I’ll be glad to help you with any of your automotive issues. Thanks for using Just Answer!