Ok, it's solved! Although i have e46...engine and ecu are almost identical (DDE5 - Bosch EDC16C1).

Simptoms:
- Needle for temp goes to max in 2. key position (this is indication dash has no communication with ecu)
- Car would crank but not start
- Diagnostic tools also do not find ecu via OBD when ...

Thanks..
..will try to make DIS working. Should have cable & cd laying around somewhere. Never used it though.
..and also take dme apart, to visually inspect pcb.

Yeah, i noticed..hope he will reach back.

Only this 'internal error 16' showing, which doesn't give any hint where to look at. I searched whole internet already. Some point to a faulty dde (moisture or burned), some reported a leaky injector, but it could also be damaged wiring. Most of people have ...

Hi, i have exactly the same problem. @B3mwe, what was the issue & how did you fix it?