No, none of the techs have connected a diagnostic tool to the lift. I was actually out of town when the second one came and said it was the pps, he told me on the phone all I would have to do is put the new one on and plug it up. Which did nothing, to fix the problem. By coding out I mean their is a red light on the dash that comes on every time, and then the lift will do nothing but idle. I can turn it off and reset it, and it will rev up maybe once then the light comes back on and it goes into idle only. I tried setting the sensor in several different places and doing the thing with the key to learn the system, still nothing changed. The one time I was able to get the lift to idle up, it would rev up then down then up then down, then it would code into idle only.