Engine just cutting out even while driving

you posted only a Nissan DIESEL engine, yd25
did the car some how get lost? (year make)
what does cutting out mean (lots of things can cut )
starts ok, and cranks and runs and not stall.
fails driving or even parked at idle. or both
tell what cuts out doing what.
cars can fail in lost of driving modes, even hills.
or fail to upshift.
no car told.

engine stalls on the fly driving ,
has huge causes.
do head lamps die too , at same time?
does a fast right foot save it? or delay it or even cure it. ???????
do all electrics die or some only?
does it restart easy or only if let cool off the engine ( or restarts easy)
ever get a tune up in 18 years spark parts, filters all?

engines can sure do that for vast reasons even 50.
in macro form, a bad engine, bad spark , bad fueling, in that order.
there are many tests, for all that ,like 3 years of ASE study.
1: fuse blew and stalled, even pump fuse. but will not restart.
2: engine bad or just EGR stuck open or cats melted but again does it restart or even run cold to fail later, if does skip this. most times.
(keep in mind seen cylinders fail hot, valves in head stick open hot)
engine overheated some models of car, my 04chev, even cuts dead cylinders if engine overheats or even stalls it, as to not wreck it self.
3: bad spark, if ECU sees spark hard fail it cuts fuel, fix spark.
4: loss off fuel or too much./ too much floods engine, injectors stuck open or go dead/

there are a bevvy of tests to do in order.
just get it serviced if dead now say so
dead engines are easy to diagnose, and 10x safer too not moving.

Drive slowly and carefully to preferably dealer or your favorite auto parts store and ask them to read the error codes.

after car shuts off do you still have fuel pressure or ignition fire? most of the time on the 3.8 liter engine it is the ignition module that gets hot and cuts off. sometimes it can be fuel pump or even the crankshaft sensor.

V6 petrol engine mmh - if the misfire is swapping from one bank to the other then it sounds like an air leak - possible vacuum pipes or inlet manifold issue or even egr valve sticking

thats the ECM protecting your engine thats why it wont start, you cant even idle your engine on no oil, yet alone drive it. change the oil filter, fill your engine with the recomended oil its probably 5w-30 to the operating range. and hope your car still starts. Hopefully it dint seize up on you, because that means your engine is now junk. sorry hope it starts for you. god bless.

you should replace fuel filter unless it has been done very recently?

does it cut out while driving?? If it cuts out while driving does the speedometer drop to zero even if the car is moving?? try shaking the key while the engine is started and the vehicle is in park...car should die?? If yes is your answer to any of these questions, its a faulty ignition switch. There is a recall for this, call your honda dealer for info and possible replacement!! hopefully this helps

sounds like the idle speed sensor,if your rpm's are idling up and down