Kadjar engine mount fault

I also have a Kadjar (although not a 2021 model). Uneven idling and engine mount errors can be tricky. Before jumping to conclusions about cables and plugs, have you inspected the engine mounting bracket itself? Sometimes a visual check can reveal cracks or excessive wear. I'm not entirely convinced a faulty connection would cause such pronounced vibrations, but I'm interested in seeing what other clues you have.

Thanks for the quick response! I haven't specifically checked the mounting bracket for visible damage, only the error codes. You mentioned you had a similar issue. Was the problem with yours also indicated in the error memory? What did the vibrations feel like in your case?

Yes, the error code was the first indicator for me too, along with similar vibrations. However, in my experience, it is difficult to diagnose. If it is indeed the engine mount, consider that a broken engine mount can cause consequential damage. Considering the symptoms, your best bet is to have a workshop take a look at it. They'll be able to properly diagnose the issue and check the mount's integrity.

Okay, thank you very much for your advice! I took it to the workshop, and they confirmed the engine mount was indeed defective. They replaced it, and the issue seems to be resolved. The bill came to 95€, which is a relief! Thanks again for pointing me in the right direction.