chk this image above, this is how usually transmission speed sensor look like. they can be different too, like the picture shown below and its basically located at the transmission output. as shown in picture down but sometime there are more than one sensors, sometimes two or three, depending upon the manufacturer. they uses two or three wire connectors, to be sure which one it would be, just unplug and check codes again if no additional codes show, than it's confirmed.
Try pressing F8 while booting right after bootscreen. Like u get msg to enter setup presß F1 etc. After tht keep pressing F8 repeatedly and u will get debug screen try to boot in safemode or last good know. Config
I am not 100% sure but it must be circuit board component issues. Check every IC resistor etc. Belonging to charging and switching circuit on motherboard. & Give detail important to capacitors. They gets short at easy in water damage.
hello first of all this phone comes with a combo unit of Touchscreen+LCD, so there is no way u can replace it one by one. although it can be done but require specialize machine. the best solution for this is to, buy new screen which is in price tag of INR 3000.00, (Touch+display unit) and replace it. You need screw driver set for it (micro) and other tools like plastic screwdriver or pointy thing to pick. and yeah last but not least - great technical skill to carry out process successfully. If you are unsure about the same, than pls do not attempt by yourself.