Peugeot 307 Turn Signal Error

I had something similar with my 307, though I didn't check the error memory specifically. The symptoms sound like what I experienced when the turn signal indicator started acting up. Have you checked the lamp unit itself for any physical damage, like a broken lens? Could be causing a short.

Nah, visually all seems fine with the lamp itself. No cracks or anything obvious. If it was the same for you, what did you do about it?

Given the absence of external damage and the presence of a stored error, it is highly probable that the defect lies within the internal circuitry or the wiring harness. Modern automotive electrical systems often necessitate specialized diagnostic equipment for precise fault isolation. I suggest consulting a qualified workshop to get your Peugeot sorted.

Roger that. Took it to a shop, you were spot on - wiring issue. Cost 95€ to get it sorted. Cheers!