Accord 2.2 i-ctdi - "gone into limp mode" - boxer42

Hi My Honda Accord 2.2 i-ctdi was starting to to splutter and hold back as if it had a fuel block it has now gone into limp mode, Changed the mass air flow meter , and fuel filter but it still wont drive , only travelling around 10-20 miles an hour. No warning light on the dash !. Has any one experenced the same problem or can be of any help,

Thankyou in advance