XC60 automatic temperature control issue

Sounds plausible. Does the error code specifically point to the interior temp sensor? Have you checked the sensor's wiring and connections?

Where exactly is that sensor located? And what do you mean by 'checking the connections'? I'm not super familiar with car electrics.

It's usually located somewhere on the dashboard or center console. By 'checking the connections,' I mean visually inspect the wires and plugs going into the sensor for damage, looseness, or corrosion. But honestly, with those symptoms and error code, it's probably best to get it checked out at a workshop.

I appreciate the input. Turns out you were right, the interior temperature sensor was indeed faulty. The repair cost me 95€ including sensor replacement. All good now!