I tried with the Traction Control turned off (dash light on) but when I accelerated out of a corner and started uphill, went back to limp mode, would not shift up to third gear. I stopped, shut it off, restarted and went on my way without the problem. You mentioned the Yaw sensor, could that be the cause? It does seem to do it when accelerating and slight leaning because of a curve. Will try most anything at this point. Thanks