2006 GU zd30 engine quietly died while drriving, ??????

[Dagwill]

Replaced IP about 20,000ks back all has been good. Then while going through a town at 50ks the engine died and would not restart. Got it home, next day tried to start couple of times, nothing.
Read codes and got 403 throtle pedal sensor, 905 air intake sensor, and 1003 EGR control [which is removed ]
Hoping its bad connection,,, but dreading its the IP.

Any ideas please
Thanks David

[nipagu7]

check and clean earth points

[Dagwill]

Cracked injector line nut at the rear of fuel pump loosened about 2 flats on the nut and hit the starter. A few drops of fuel come out each time it should fire, certainly nothing violent or high pressure.

[Dagwill]

tightened nut a little at a time to try and create high pressure, didnt happen but then noticed it was spilling at every second compression stroke instead of every 4th. ???????