So I had what I thought was a bad AFM, ordered a lexus afm which I just put in today. After resetting the ecu, no codes and the car ran like good. I took it for about a 5 minute test drive and everything seemed normal. I was in my driveway with the car idling scrolling through my s-afc readings when all of a sudden the car starts acting like it did before with the bad AFM. I check the code and now I get 31, no 24. Do I have a bad circuit? Car starts with AFM disconnected but now will not start at all with it connected (I get ignition then it dies almost instantly). Any help is appreciated.