P1351 FAULT..CITROEN C5 1.6HDI

[crosser69]

i recently made a big mistake,my speedo started playing up and i changed the clocks from my c5 saloon and ended up getting the higher mileage put onto my car as well as 'risk of particle blocking' car runs great and does not appear to miss a beat.
had it in for a service and lad tried to turn this message off without success.
His lexia comes up with fault p1351 preheating relay circuit stuck in open position.
Any ideas and would this cause the 'risk of particle blocking' message to stay on.
Egr valve has been changed off a car where the message does not come on,the fault seams to have been carried across from the other car as that had that message on as well.
Ive also noticed 'service' light stays on even after key is taken out of ignition.

[DickieG]

Not sure about this but you may need to get it connected to a Lexia in order to tell the car that its had a new instrument panel fitted in order to make the new panel compatible with the car.