They said that the p0605 was the hard failure and that the 700 was a result of the 605. then he said that the 605 was caused by a bad battery and if I installed the new computer with the same battery that the new computer would fail also. That part I just don't get. The car cranks just fine and I would think that once the battery started going bad I would notice a reduction in cranking "power" first as that has the most draw on the battery. I had a problem with the main hot battery cable where it connects to the power distrubution box. That may have caused my problem. I am going to remove and clean those connections again before I install the new computer.