I scan mi Daihatsu because the check engine was on it gave me Code 12. Then I diconect the negative cable that comes from the batery. I road for 300 km check engine when on again I scan and I got Codes 2 and 12. Two is because I disconec on porpuse a sensor to se if check engine will light on and it did I reset but I didnt notice that codes were keept on memory .¿What can I do?