Combustion of cylinder N°3 - 1.6 BlueHDI 120HP

[LakiSerbia508]

Hello,

What can be the problem of this DTC, it says that correction of quantity of the injected fuel was insufficient.

What I experienced that sometimes at start car "coughs" and then engine turns on and work properly.
Also around 2000rpm I experience slight twitch of the engine.

Still I fear to start repair from injectors and buy a new ones or fix them all, as the car is now going well, just that DTC and behavior at specific situations I explained.

I am trying to find root cause.