Last night, dad bought an 06 Focus C Max 2.0TDCi, 130k on the clock, fp to it inside and out is pretty decent condition and starts up and drives lovely.
Me being me, I properly tested it out by taking it up the fast road and seeing what it could do, evidently my old man didn't do this on the test drive and probably pootled up the road and back, As soon as I got past 3k rpm car went into limp mode but didn't give an immediate EML, a quick turn off and back on resetted the car and it goes back to driving normally, but goes back into limp mode as soon as you pin the throttle down and go past 3k.
Eventually an EML did come up, with the fault code P242F - DPF Restriction - Ash Accumulation.....Ah the DPF reason I don't like diesel.
Google seems to suggest taking it for a long blast up the motorway and back will cure this, how likely on a car with 130k miles? Taa