So i am driving in stop and go traffic and the temp get to 200 or so and the car goes from 4 gear to 0 for about 45 second and then back to gear. The SMG light came on and not to long after the SES light comes on code is P1717. After the car cools down it drives fine. If i drive on the highway to and from work no problems it is only in stop and go. I change the salmon relay in the engine bay and problem is still there. I need ideas of what it can be so i can fix it.