hello i have a 96 honda civic ex and my service engine soon light came on. one of my friend have a computer and it said the knocking sensor so i replace it and for some reason it keeps coming back on. what would be the problem?

 

i just bought a new knock sensor and my light keeps coming back on even when i reset the computer. now some one told me that it could be the knock sensor, but i told him that i replaced it with a new one he said even the new one mess up also. would this be my problem?