Problem when is in low rotation/speed C5 1.6hi 2009

[Tiagovp]

Hello everyone. I hope you are all well.
I need some help from you.

Citroen C5 x7 1.6 HDI, the van is behaving somewhat strangely when moving and at low rotation/speed.
It starts to hiccup sometimes, it seems to block the engine.
I have a diagnostic machine, but it is not Lexia.

I would like to know if there are any tables for reference values ​​for this engine.
diesel pressure, injectors, etc.
I am not getting any errors that would tell me that there might be a faulty injector.
Is there any test that I can do without disassembling it first?

Thanks everyone.

[Tiagovp]

which of the injectors is faulty? traveling at 50km/h at 2000 rpm