Caddy 2,0 SDI Steuergerät defekt? | Posts 16+

Quote:

Shouldn't the engine still start, or at least should the glow plug light illuminate, even if there's a problem with the wiring harness of the CAN drive system?

Yes. Even if communication with the WFS were not possible, it would still need to run for 1-2 seconds.

Quote:

Does the engine control unit still use a K-line connection in the 2K system?

In addition to the CAN bus, K-Line is also present. Whether it's used for general OBD or specifically for OBD2 varies depending on the model and year of manufacture. Generally, models from 2008 onwards use the CAN bus for OBD2 as well.

Sure, here is the translation of the text from German to English:

"LG" can be translated as "Best regards" or "Sincerely". It is a common abbreviation for "Liebe Grüße", which means "Warm greetings" in English.

A failed jump start attempt due to reversed polarity can be ruled out. It was not even attempted.
I will probably try to arrange a control unit for testing.
I don't see any other options anymore.
I am still grateful for any suggestions or advice you may have.

The vehicle is running again.

It was actually due to the engine control unit.

3bAFN wrote:

The vehicle is running again. It was actually due to the engine control unit.

Thank you for the feedback!