2008 ford edge

Hi there i have a 2008 ford edge with a rebuilt transmission a year ago. Two weeks ago my OSS and TSS sensors went bad. I also had them replaced.for some reason when i come to a stop my tranny goes to safe mode. I have to turn it off and turn it on so it goes back to normal. I took it back to the shop were they rebuilt it and told me it was the valve body. Changed that and same problem. Basicly a new tranny that goes into limp mode. Please can anyone help?