As above.

Sudden non start/non run.

Code P1251 present.

There is fuel at the injectors on cranking but with insufficient pressure to operate.

From what I have read this is a good indicator of internal pump failure requiring replacement or repair.

1) Is this correct?

2) Can S/H pumps be fitted without having to be "Recoded"?

3) there appear to be several Manufacturer/pump options used on this. Are they interchangeable?

4) Are there any good places where these can be repaired reasonably economically?

(The Owner is willing to spend up to £500 on this but probably no more. I reckon this is likely to be touch and go but answers to the above would help making a decision)

Cheers