Technical Engine failure first time car starts

[adju]

When my engine is cold e.g. in the morning I get the Engine failure.
After a trip, and the engine bay is warm then after a restart the failure is gone but when the car is stalled, after 4 to 6 hours the failure is there again.

Engine is running good, no extreme consumption or what so ever.

Already cleaned and dried the D4 connector.
Had the battery on a charger overnight but that didn't help.

What else is there to check?

thanks in advance

 

[yellowstilo]

read the fault code , this might give you a hint in the right diection...
read your battery voltage in the morning before you start the car - it has to read 12v minimum , if it reads less you might consider to change it for a new one with more capacity.

 

[haelewyn]

My experience with my 1.9 JTD is that the car always needs to be started two times when it's cold. When it's warm it will start from the first time. I get no lights or errors. Just when i start it , it won't work the first time.
Letting it preheat a little longer than the light on the dash asked me to solved the problem most of the time.
Generally, i got used to starting it two times now. Altough at first i was surprised by its behavior... Never had it before with other cars or Fiats.

 

[adju]

This afternoon I cleaned and air dried all the fuse and other connectors at the battery bay and the two major connectors.
Just one hour ago with minus 5 degrees the battery is 12.38V.
So will see to morrow morning if this is still the same and if all my work had some success, at the moment I believe it is a moisture problem because when the engine en engine bay is hot the problem is gone So!!!!!

 

[adju]

Solved,
This morning the battery was 12.10V.
Started the car without any warnings.
I'm confided (I hope) that moister was the cause and that I'm released from
the errors.

 

[Argonought]

Well done

Might want to consider a new battery if it happens again.