Can an exhaust leak (at the pipe connecting to one of the header flanges) cause a P0325 code? My knock sensor wires from the top arent GREAT but don't look bad, so I can't tell if its simply the sensor but I know I do have a minor exhaust leak by the header flange.

 

P0325 is usually one of these 3 things

The knock sensor is faulty and needs to be replaced
There is a wiring short/fault in the knock sensor circuit - and the looks of your wires makes this one most likely
The PCM powertrain control module is failed

And has nothing to do with an exhaust leak.

 

So the rattling from my pipe rubbing against my frame wouldn't cause the sensor to think that there's a knock? If it is the sensor that sucks because I don't have the time or another vehicle to take my truck down to take off my intake manifold. 🤦‍♂️

 

If the sensor thought that was a knock, it would just adjust the ignition timing, not set a code.

 

Well this definitely doesn't look good, it's been like this for a loooong time but only a couple months ago did I ever get the code.