I have had this too on a 03 plate tddi 1.8 only mine went from bad to worse and now the car will not turn over at all I have dashes where my mileage should be car just wont turn over at all not even a click.
Ive been told ECU fault ive also been told Pump failure, wouldnt mind knowing what it is so I know how much money its going to cost me dont want to start throwing money at it because people are guessing.
All electrics work fine just no response when I turn key and dashes show in mileage.