Posted by Steve Gittins. on July 22, 2009, 11:34 am, in reply to "Fixed #"
Just working on a 307 now with the exact same codes. This car also had a new Differential pressure sensor about 2 yrs ago. With pipes disconnected from the sensor it still shows the filter blocked so I ordered a new one which should arrive today. Will let you know if its OK but I am confident it will be. Looks like they may have a quality issue with the sensors.
Edited to say:- We fitted another new sensor, the car has been back with the customer for almost a week and its all OK.