Car as described in very good condition with 30k miles on the clock.
P0652 (sensor reference voltage B circuit low) will appear with the first glitch sometimes but often P0336(crank position sensor circuit range performance) and P0191(fuel rail pressure sensor circuit range or performance)with it.?


Have done 8 mile test drive without any symptoms at all. But when it starts playing up sometimes you get just amber ! with circle around other times it will flash sometimes not? After this starts it occasionally will stop.Most of the time it will restart with no problems other times it wont start at all.

I have had it at idle in the workshop with scanner storing data and when it stops it will cut all sensors at the same time.It can run for hours sometimes before it stops. With live data 2 things worry me one is NO rpm until the moment it starts when you will catch one frame at 240rpm then next its at 840rpm??
The other is while cranking fuel rail pressure will only build about 50 bar straight to 220 at start up..? (no air in the lines)

I have tried crank sensor, inspected all looms and performed wiggle test. Removed battery and replaced all the earth connections undernieth.Removed intake and visually checked all multiplugs and rail connections etc.

The actual eml has never actually came on to my knowledge and eobd thinks everything is fine.

Any ideas welcome. I keep thinking its a wiring issue but wait to be proved wrong.

When