Citroen C8 Turn Signal Error

I had a similar issue on my C8. Have you checked the wiring loom where it enters the light cluster? That was my problem.

By wiring loom, do you mean the main harness going into the whole rear light assembly, or a specific section? Did you see any visible corrosion or damage?

Precisely, the main harness. Unfortunately, I did not investigate deeper, so I cannot provide details on corrosion or damage. I took my car to the workshop and they handled the repair.

Understood. I think I'll do the same and take it to a workshop to get sorted. They reckon 95€, so hopefully that will solve it. I appreciate your help!