Solar sensor fault Grandland X

Hmm, that's a weird one. Sounds like the HVAC sensor might be on the fritz. I had a similar issue with my old Peugeot – different error code, but also related to a sensor affecting the climate control. Check the sensor calibration, or take it to the garage.

Interesting. What exactly went wrong with your Peugeot? Was it a pain to diagnose?

It was a nightmare! Turned out to be a faulty sunlight sensor connection. The system was reading incorrect data. Given your Grandland X's age and mileage (109569 km), and that you already suspect the wiring, I'd say a workshop visit is probably a good idea. You don't want to mess with the HVAC system yourself unless you know what you're doing.

Booked it in. Seems like a new sensor and fitting will be 95€. Thanks for confirming my suspicions!