One problem related to transmission solenoid has been reported for the 2006 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Hyundai Sonata based on all problems reported for the 2006 Sonata.
While driving the vehicle at 50 mph, it suddenly slams into third gear causing a violent jerking and sudden deceleration. The engine light comes on and the car remains in 3rd gear for a period of time and then returns to normal. This occurred two days in a row. The second time I was almost rear ended when my vehicle slammed into third gear. It was determined that the transmission wiring harness and overdrive solenoid were defective. Error code was p0765.