A while back i converted my 89 civic to obd1, but had 2 CEL's. 1 was a code 20, Electric load sensor, 2 was code 41 o2 sensor heater. Well, ive been fucking with it for a few hours so far, and im lost. Im using an obd1 kia o2 sensor. Ive checked the power on all four pins, i know which one is the positive, but the other 3 all read between .02-.05 volts. they all act as a good ground also. so wtf? the wires on the o2 sensor are 2 white, a grey, and a black. so, if someone has done this converion using a kia o2 before, please help.