Technical HELP!! Unknown problem

[S1mon1986]

I have a 2012 Fiat Ducato 35 multi jet mk3 (250/251)
When I start the van it will not idle and I get a message saying check engine, but when you Rev the van it stay running when the van is driven and warm the engine then runs ok. I’ve had a veh mechanic look and couldn’t find a problem with the hardware. I then send ECU away to be tests and that was all good I then had an auto electrician check wiring and again all seems good.
Has anyone had this problem and know what I can now do.
TIA
Simon.

 

[varesecrazy]

Hi

So you are seeing no bad figures for rail pressure.. temperatures or flow?

No warning lights.. just a message??

So unlikely to be storing codes..

 

[S1mon1986]

No there’s is not warning lights and no other messages it says check engines then goes off as for the codes and rail I don’t know as I’m not a mechanic, I had the van in which a veh mechanic and he said he couldn’t find anything then it went to a auto electrician that couldn’t find anything in an at a loose end