I mean "Lights on"
As in rear and front lights is on.
I replaced the top of the throttle thingy, with the old, which appearantly is the ECU.
And code went away.
Expected, when you know it's the ECU.
The thing sprung to life.
I tried holding the old key to the ignition, and what do you know, "code" was erratic again.
So 2 different transponders wil interfer with each other.
the weird thing is, after the thing has awoken, been running for a while, then the lights go out after turning engine off????
Well, that italian cars for you.
So everything is now in order.
Thanks for the hint, that the ECU was infact the throttle lid.