Hi , thks for the codes
First thing would be to ensure the fuel filter has been changed , fit a genuine one
Also fuel rail pressure sensors are known to give problems
It may at the end of the day be the fuel pump inside ur tank but always best to start with the simple things
Are u aware there is a fuel pressure test point at the back of the engine , is a shrieder valve
1) ensure ur battery is ok first
2) check fuel filter / replace
3) clean ur map sensor , is in the throttle body , don’t put anything down the hole , use some egr / map cleaner
4) ensure wires to fuel pressure sensor is ok
5) butterfly valve has been removed from throttle body
What reader are u using plse, can u the live data
Also here is a link ref codes
https://www.disco3.co.uk/forum/chan...-hdcgearbox-fault-175258.html?highlight=P0192
Ref ur egrs , they could be faulty but as you’ve blanked them there’s normally no need to replace them , also check the butterfly valve has been removed from the throttle body
Hope that helps a little and plse let us know how u get on