Peugeot 207 headlight range control fault

Sounds familiar. I had something similar happen with my old Opel Astra. Kept getting a headlight error and the beam adjustment was all over the place. Did you check the electrical connectors to the headlight? Sometimes it's just a bad connection.

Connectors, huh? Where exactly should I be looking? Is it something obvious, or do I need to take the whole headlight assembly apart?

On the Astra, it was a pain to get to. You might need to remove the headlight to get a good look. Honestly, if you're not comfortable poking around, it might be worth having a workshop take a quick look. Could save you some hassle in the long run. Seems like the servomotor is defective.

I appreciate the input. Ended up taking it to a shop. Turns out the servomotor in the headlight was toast, just like you said. Cost me 1040€ to get it fixed. Ugh!