I have a 93 civic cx hb with a b18b in it. Everything is smooth but the check engine light is giving me a 41 code. I am running the cx harness. I hooked up the O2 sensor following the directions from this site for a 1 wire to 4 wire but am still getting a 41 code. I am using a p72 and a bosch 4 wire. Any feedback would be great. Thank you.