Hyundai Repair: speed sensors, transmission control module, speed sensors

Question
i had my car put on a machine and it came back 2 different codes one was a po715 and an po705 can you please tell me what these codes are for? i would really appreciate any information you can give. my check engine light will come on and when i stop at a light or stop sign it moves really slow and then it speeds up. please i need your help   THANK YOU

Answer
P0705 is for a range switch circuit malfunction.  This is almost always caused by the range switch itself.

P0715 is for an input speed sensor malfunction.  I've never seen this caused by anything other than the input speed sensor.

The reason your car accelerates slowly is that the TCM (transmission control module) puts the transmission in third gear only when it detects one of the above faults.  

I'd recommend replacing the transmission range switch and the input speed sensor.  That will probably solve your problems.