1995 Volvo 850 Q&A
1995 Volvo 850 Question: What does the check engine light mean?
I don't know what to say about the fan except that if there's a fault in the engine control system the fan could be commanded on for that reason. You didn't say whether the fan kept running or not. The check engine light indicates that the computer has detected a malfunction in the engine/transmission control system and has diagnostic codes and data stored which would be essential in diagnosing the problem. A technician with a scanner can access the diagnostic codes and data and then be able to give you a diagnosis. If you want to find a Volvo specialist, here's our directory link for you: https://repairpal.com/directory?address=35094&car_brand_names=Volvo - Superbob