Peugeot 806 Overheating

I had similar overheating issues with my 806. Do you hear any unusual fan noise, or is the fan blade obstructed? Has the temperature control been checked?

I don't hear unusual fan noise, and the fan blade looks clear. I haven't checked the temperature control. Could that be related?

Yes, it could. My speed sensor was defective, which stopped the fan from starting. I'd suggest a workshop visit.

The mechanic confirmed the speed sensor was defective, causing the radiator fan to fail. The repair was 250€.