I just bought a Equus code reader since I have a CEL. Its one of the cheap thirty dollar variety. To make a long story short, it says there are no codes. So I went and did a self- test and there are codes, which Iam not quite sure if I read them right. Anyways I am wondering who has bought a decent code reader, Iam thinking of buying a one over a hundred dollars because reading the self test codes is near impossible i think.