Anybody know the diffrence between ECM 89661-3D020 and 89661-3D030. I replaced my 95 4runner with the 3D030 and my problem went away but check engine light code 27 appeared. My runner is not equiped with a sub heated oxygen sensor. I'm not sure if the ECM I used came from a California car because i got it from a junk yard here in Hawaii. Could I run the vehicle like this without damaging the motor? Any help in this will surely be appreciated. Aloha!