me too!!
Yes I have never been able to clear any trouble codes with my 3705 either. I guess it also depends on the 'level' of the code set, but if all I ever get is the P0234 code I will be happy. After you scan for codes and it goes back to the main screen, is that where you turn off the ign. and unplug the scanner?? Just wondering, it really doesn't give specific instructions on just scanning for codes then finishing up after words. The tech at Superchips told me that is the quickest way to do it. TIA gary