Engine Failure: Mystery Solved?

Hello everyone,
Okay, here's the translation:

"I'm new here, and I'm about to describe a problem. It's a Ford Focus II 2.0 TDCi. The engine has already stalled twice while the car was stationary, before it reached operating temperature. However, the instrument panel lights, such as the oil pressure and airbag indicators, didn't come on. This would suggest that the *ignition* has been cut off, meaning the magnetic valve has closed. It's the same state as if I had turned off the engine using the key. When the engine stalls, everything else turns on. The question is, what triggers this condition? Does the magnetic valve suddenly lose power and close?"
The thought that this happened on the highway, on the left-hand side, makes me quite nervous.
Perhaps some of the members have already encountered this phenomenon.

I'm not sure which solenoid valve you're referring to.
I would suspect the power supply. It could be the ignition switch itself, or a relay. A less likely, but still possible, cause is a loose connection or a wiring problem.

What is still working and what is not working when the engine and lights are off? Do the windshield wipers and all other consumers still work? After you have narrowed that down, you need to check the wiring diagram to see where they are all powered from. You will probably have found the cause then.

Regards,
Guste.

The solenoid valve is used to stop the engine. The moment I...
Turning the 'ignition' on should cause it to open, allowing fuel to flow. It's located in the fuel supply line to the fuel pump. When I turn the key to the left, it becomes de-energized and closes. This has happened twice without turning the key. However, it started up again immediately.

You also mention that the oil pressure warning light and other indicators don't light up in case of a fault. This contradicts the idea that the problem is solely due to a defective solenoid valve.

Regarding the rest: Please refer to the previous response.

There was no mention of a fault with the solenoid valve itself. Something caused the solenoid valve to close. If I were to stop the engine by force, everything would light up because the "ignition" is still on. In my opinion, something is de-energizing the valve. I'm ruling out an electronic fault because no error codes are stored.