Hi this car is coming up with code refering to pressure differential on the particulate filter. WE removed the filter and cleaned it using info gained from the net and then did numerous fap regenerations then bit the bullet and replaced it.whether its relavent but have filled and reset the additive tank too. Fault is intermittent the fault can appear on start up or when driving down the road some times after several miles and with several days with no fault at all leading you into a false sense of security. im a little stumped and wondered about any experience with these beautiful peugeots ( sarcasm) we have just done a cambelt failure which was 40 hours of engine out etc but the fault was already there and it was in fact on its way to us when the belt failed!! the actual code eludes me at this moment and the car is not here and my job sheet is in it unfortunatelly but p1447 rings a bell. i hear they have sensor faults and ecu faults but this car has had that many faults its been here more than at his home! Ill change whatever needs doing but some direction would help. The dealer aparently have never come across this ! Im not sure but i dont think it performs as it should but again this varies. scans ok for air mass and boost pressure which could have an effect i suppose. any suggestions welcome.