406 110 HDI Anti Pollution Fault

Hey everyone.
Yesternight my car's [Y reg 406, 2.0L, 110 HDI] check engine light lit up and it gave antipollution fault, 2 minutes after me starting her up to go home from work.
I read few topics already posted about this fault on site mention that owner's car has gone into limp mode.
Mine isn't. She is still revving and with fault I hit 120 mph thinking it might be slightly clogged DPF and it might clear it out...

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