2001 TD5 Engine ‘faints’ under acceleration W Load @ circa 3200RPM

I have a difficult problem whereby when typically accelerating up steep ascents
( say 30-40degrees), in say low range 2nd or 3rd the orange engine light comes on at about 3200 rpm
and the engine cuts or loses most of its power .
Similarly when towing a trailer and I accelerate quickly,
Nanocom finds a persistent crank angle sensor fault ... even after sensor is replaced
with no noticeable fault whilst driving normally!

So problem results when there is fast demand under load.

I have changed the Fuel pressure, Fuel Temp and Crank Angle Sensors
and checked the full Fuel Supply/ Return line taking pressure readings etc ... all OK.

Car starts and drives well under all other conditions below 3000rpm and when not
accelllerating under load ....


Any ideas guys ??????????

Can be the CPS wiring or connector, not uncommon... is the ECU red plug clear of oil? not so common but i've seen a case when this kind of fault was caused by worn DMF

Cured ours years ago by cleaning maf sensor