I have a 2006 Maxima. I found the shifting from 1st gear to 2nd gear very harsh. The car actually jerks. Does the same from reverse. My mechanic did a diagnostic and got a code P0726. I search on line and found a lot of people in the state had this problem. I called Nissan Canada. They have no recalls and wont even listen to me. Anyone know the fix to this? I already changed my transmission oil. My friend also has a 2006 and he has the same problem