Then I stopped, turned the car off and back on and everything was ok. After 3 km of driving, the same thing happens again, I turned the car off, and back on and it did not happen now for 3 days. I checked it with OBD software (obdautodoctor) and it shows "Pending DTC":
Description:Particulate Filter Pressure Sensor "A" Circuit High
After this, I was driving for about 150 km and nothing happened, the car runs fine as normal, no error on dashboard ...
Should I be worried? For me it looks like (as P2455 error description says) that there was some weird pressure in the DPF filter (didn't even knew that I have one :S) which was registered by sensor A (looks like there are more of those sensors) and that error did pop up. Should I do DPF regeneration procedure ?