Fiat Doblo AC Compressor Failure

Based on the symptoms you've described and the error code present, it is possible that undervoltage within the vehicle's electrical system is causing the A/C compressor to disengage. Have you checked the voltage at the A/C compressor when the system is activated? Also, could you specify the exact error code you're seeing in the vehicle's diagnostic memory?

Voltage, huh? I haven't checked that directly at the compressor, no. Where exactly should I measure that? The error code is B10AA. Does that undervoltage thing usually fry the A/C compressor?

Error code B10AA indeed suggests an undervoltage issue. While directly measuring voltage at the compressor is possible, it requires a level of electrical system understanding. Given the observed symptoms and error code, along with your relative level of experience, I would recommend consulting a qualified automotive technician to avoid causing further damage. It is likely that the A/C compressor has switched off to prevent damage. Persistently running the system in an undervoltage state may eventually cause damage to the compressor itself.

Okay, thanks a lot! You nailed it! Took it to a workshop, and the low voltage was the culprit. They fixed the wiring and charged the system. Cost me 240€, but at least it's working again!