First a little background. I have a '92 teg RS with a B16A motor and YS1 tranny w/LSD. My problem is that my P30 ECU is throwing a code 19 and 20. I am pretty sure the code 19 means that the ecu is out of automatic transmission car. As for the code 20, I read that it means “Electronic Load Detector” , but I have no clue as to what that is or does. Any help with this problem would be greatly appreciated. 
I have the same code, I think I got it when I added P/H injectors and a resistor pack to my car. I still have to check my helms to see what the troubleshooting is. ELD sounds pretty vauge to me, hopefully the troubleshooting isn’t vauge as well.