Originally Posted by Tigr

Hi Pietro. Thank you very much for your reply. Yes, I should by better diagnose tool, I have a DELPHI...

Battery and alternator voltages are correct. But you just "confirmed" my theory: 2 Glow-plugs burned, which caused a short under or over voltage, which triggered the first few diagnose error codes. (I deleted all of them, drove already more than 1000 km, and only 2 glow-plug errors are coming back.)

Glow-plug relay was exchanged 2 years ago. At that time, as you said, the error codes of all 6 glow-plugs were always there.

I agree with you now: it is not the DPF... But I do not agree with you that the Check engine light will definitely go on. I really have a lot of mileages on my car (~500.000 km), so the DPF was already clogged once. No Check engine light came up. I just lost the power, was able to drive max 80 km/h. I was on high-way, pressing the accelerator pedal was actually acting vice versa.

But anyway, thank you very much for your replay!
Tigran