Daewoo D100-2 s/n F1-00091

We are getting a Fault code 3E when we shift this unit into a direction. When the shift lever is shifted into 1st it takes off in 2nd and down shifts to 1st and it is a pretty hard shift. You can shut the engine off and restart and the code will go away and it might work a time or two, then the wrench light will come on and the code is present again and it starts acting up.

Thanks
Jimmy