Hello! English is not my native language, and I use a translation program for assistance and I hope that you understand what I write.

Audi A8 4.0 TDI 2003
When the engine reaches operating temperature, the gear box does not change and the engine will work half power. Transmission doun´t have trouble codes.
Transmission ECU:
vag:
Display group 002:
Display zone 1: Current gearshift program 1-45.
whenever transmission goes to an emergency mode shows 47. Can not find the matches for this. Shift programme for Tiptronic function working properly.
Engine ECU gives intake manifold runner control fault. Do not believe that it is a problem. If anyone has ideas to help solve the problem, let me know

I found a solution to the problem:D Fuel temperature goes above the permitted limit. Fuel temperature sender seems to be ok. I tried second sensor and the temperature was the same. Today I will try to identify the cause of the overheating of the fuel.

Problem was in crushed main fuel pipe under the body and because fuel pressure was low, someone had the fuel filter backflow valve re-done to compensate for the lack of fuel pressure. And so became the hot fuel to recycle.
After the defect elimination is fuel temperature 45c when engine coolant temperature is 85c. Before was fuel temperature almoust same with engine coolant temperature. The maximum permissible temperature of the fuel is 70c.