Firstly your English is perfect!
As to the fault _ I have not encountered this error code before.
The code would suggest that the power feed to the injectors is a problem but your engine appears to be working well and personally I wouldn't spend too much time investigating a fault code if there are no symptoms.
Perhaps it would be worth checking the electrical plugs on the injector loom for cleanliness and fit. The fault code would point to the main plug rather than the individual injector plugs.