1998 honda civic lx code 1298, 720

hi there, i have a 1998 honda civic lx automatic, it has 2 codes in it, 1298 and 720. i put a new contershaft sensor in and also replaced the fuse box where the ELD is located and i checked the wires on back of the engine where they rub the bracket,also replaced the altinator and still i cant find what is causing the codes. i would be very greatful if someone that has had this same problem give me a little help please. Thank you

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