My 04 crv with 110k on it has a p0325 knock code on it. I changed the knock sensor, ran the sea foam combustion cleaner thru throttle, changed wires and plugs with no change. Code appears when it hits 25 mph. When it's in neutral though, I can rev the engine to 6k and no code appears. Any idea where I should look? Thanks

 

welcome to the forum did you replace the knock sensor wtih an after market or a honda dealership sensor. might make the difference.

 

It's an aftermarket sensor. I'm still puzzled by no code in neutral

 

I bought a Honda sensor and the code disappeared. Thanks!

 

good news. many sensors and fluids made by honda are not quite the same as the after market. with american and some foreign cars, the after market works great. but honda is sensitive about their parts. Example: transmission fluid, automatic, use honda only. fluid by honda produces less bubblnig than aftermarket. less detergent in the fluid, so if after market fluid used, the trans start to slip or shifts bad shortly after changing or adding fluid. there are many oem honda sites that you can get parts at a good price. be sure its genuine Honda parts.