Hello dear community. For 8 years I finally have another Laguna. ( Bj 11/2004, 2,2 DCI, Grandtour, 3333/06/5 ) I like it very much, if there were not this error….. :WOOD: When reading out he says error DF312, particle filter was regenerated 2 days ago. On that day also everything was good, no error message. The next morning came immediately after starting again particle filter clean, sensor defective and sometimes injection defective. Where should I start looking? Renault will immediately al … costs about 800-1000 euros. :KOPF: When reading out comes this error: DF312 – speed requirement ??? Do any of you know this problem? LG Guido