Ford Freestyle Computer Limp Mode - Reduced Power

Bought A Freestyle Used Today, Had Problems Before I Made It To The Highway. Most Of The Time Driving The Transmission Throttle Error Icon...

Wrench Light Came On 2 Days Ago. Everything Suggested The Throttle Body. Replaced It, Reprogrammed It, Still Not Working. Friend Came By...

I Have The Vehicle Listed Above And 80% Of The Time When Shifting From Reverse It Jumps Into Limp Mode. This Is The Only Time It Does It....

I Recently Replaced The Catalytic Convertor And Was Wondering If It Could Be The Throttle Position Sensor. Thank You For Any Advise You...