Peugeot 107 Solar Sensor Fault

A solar sensor issue affecting heating? Seems odd, doesn't it? Is the air conditioning working properly? Have you checked the sensor's wiring for any obvious damage or corrosion?

Good point about the AC! I'll check that. Where exactly is the solar sensor located in the 107? Knowing that would help me inspect the wiring more closely.

Usually they are on top of the dashboard near the windshield. But honestly, with those symptoms, I'd recommend a visit to the workshop. A faulty sensor can mess with the climate control in unexpected ways. Save yourself the headache.

Thanks for the advice! I took it to a shop, and you were right – it was the solar sensor's wiring. Cost me 95€ to get it sorted. Much appreciated!