Fault lamp when diesel is changed

Hello friends
I have been buying diesel from tp for 13 thousand kilometers. I had to put shell nitro since I had to do it tonight. 10km after picking up the diesel, the "depollution system faulty" car did not pass 3000 cycles, I had to wait right and wait for a while and when I restarted it was still failing, but the trouble was fixed. The fault lamp is still on, but there is no abnormality in the drive and the operation of the car. Did I live this fault because I changed the diesel I have been using for a long time? I was constantly putting nornal euro diesel from Tp, shell nitro euro, a much thinner diesel vehicle than diesel, might it have caused this error?

Yes, my teacher has removed the dirt in the fuel system since a situation related to fuel has been added to the shell nitro, so he gave this error. I say replace the fuel filter.