Meant base of actual engine bay fuse box as in picture above. Think there are connectors underneath to ecu etc. Not unknown for a pin to be coroded or socket opened up enough to make bad connection especially if moisture is present.

Alasdair

Also you can check and R8 which is related to Engine electronic components

Tested the code after letting the car sit for 6 hours (cold engine):

• Cold Engine (Ignition ON, Engine OFF): The code was static and refused to clear. I tried clearing it 4 times in a row, but it reappeared instantly on every rescan without even starting the engine.

• Warm Engine: After driving to lunch and back, I cleared the code on ignition—it wiped cleanly and stayed gone.

Will check the rest of the suggestions when I come home.

And retray to clear fault when the engine is cold.

9 hours ago, digibum said:

DNFE / 2.0 TSI EA888 Gen 4 / 280 hp

Unfortunately I don't have recent enough circuit diagrams for Superb to cover this engine code.