2002 CRV Honda K24A engine (2.4L I4) having a P0325 knock sensor issue. I've checked the knock sensor and connection to the PCM and they are all OK (good voltage response, no short). I've recently run two tanks worth of 93 RON gas with MMT additive (net 97 RON) with no impact. If I run the Honda dx (reset PCM and run the engine for 5+ min at 3000 rpm in Park after engine is warm - at least one fan cycle) never throws the code - it only occurs after some time while driving. Any thoughts before I start looking into lower temp spark plugs, coolant system cleaning, or buildup in the combustion chamber (higher compression related issues). I have been faithfully changing oil at 3000 mi OCI with wally world 5W30, Techron once per oil change, and coolant changes ever 2 years one this 1-owner car, Coil on plug and plug changes 2 years / 38K miles ago.