Today I put a 4 wire o2 sensor in my car to day which it did not have one to begin with it is a 91 crx b18b.before I had replaced it I had 3 check engine which were code 4 camshaft position sesnor, code 7 tps, code 1 o2 sensor I replaced it today and i read the codes to make sure I hooked the o2 sensor up right and I but know I only have 1 code remaining which is tps. How in the hell did that happen were did code 4 go!?!

 

bump anyone have ides