Sup HT. I got a problem right now. Basically my check engine light will light up every so often (randomly). So I checked it myself, and its throwin code 9 (CYP sensor problem), BUT when I took it to a couple mechanics shops, they said it's probably a VAC leak, but it's hard to say. One of the mechanics even said that being that my car is OBD-II (98 GSR), I actually can't check wat code the ecu is throwin myself, so its NOT a CYP issue. WTF?

Any insights...