jdmb18c. jdm p72 ecu. my car is throwing a knock sensor code, but it is inconsistent. 99% of the time it won't throw the code if it is cold outside. it always throws the code when it is warm. car is stock except intake and test pipe w resonator removed. ?

 

Try an other knock senser.Its easy to change.Or have someone with a good scanner look at it,sometimes there is more info than just the code.
Glenn

 

get a good scanner like the mac one, it will tell you exactly what is wrong