Thanks for trying to help but i have disconnected the negative only i will try to do both and hold together, but as i am driving i’ll manually shift to 1st or 2nd and it’ll grab 1st gear for a split second and then shift to second like if something making it shift to second also it starts off in 3rd gear and doesn’t downshift to first or second full throttle

 

Upsate so it’s still in limp mode no trans code only code is 02 which is p0031 tho when i turn it back on and don’t floor it it’ll accel from a stop in 1st and once it shifts to 2nd it’ll lock out into limp mode