Just recently my 2007 1.6.HDI has lacked power when trying to use more than about quarter throttle in the higher gears and a warning came up saying 'Danger of filter blocking' (which did clear after about 3 restarts) so thinking that the fuel filter might be partially blocked, I changed it but it made no difference to the problem. I used the car again today and after about 3 miles the above error message appeared followed by an 'Antipollution Faulty' message with the MIL permanently on and then after about 6 miles I could not do more than 50mph with very little acceleration. Has it gone into a 'limp' mode? I have an OTC scanner which unfortunately wont communicate with the car. All suggestions as to the possible cause of this problem gratefully received.