2003 Sonata stuck in 3rd gear
 

hello all, have a 2003 sonata 2.0l non american version that stays in 3rd when put into drive. there is no check engine light and when i do a code scan with a generic pc usb scanner and pmscan software only error found is the air intake temperature. i have check the relay for the transmission and reseated the connectors on the transmission but fault still exiests. when changing from park to reverse or n to d it jumps. can anyone say what possible solution there is. Also do the generic code scanners read the at codes?

Well I got the codes checked with another scanner which indicates a problem with the lr solenoid. can someone give me a diagram and instructions on identifying and replacing this?
Thanks.

The factory repair info at link
Hyundai Service Website