This sounds like what happens when your timing belt breaks.
its a Volvo
low radiator fluid
It means the engine has stalled and the key is on.
anti pollution system warning ! Not critical at all .
There's no Volvo 850 2000. What you likely saw was a S70.
The little red light on the dashboard of a 1995 Volvo 850 typically indicates a warning related to the vehicle's oil pressure or battery charging system. If it lights up, it’s essential to check the oil level and the battery condition immediately. Ignoring this warning could lead to serious engine damage or electrical system failure. Always refer to the owner’s manual for specific guidance on dashboard warnings.
when engine running , i took out msf sensor accidentally. Then lambda on ,
The Volvo 850 has two horns in front of the radiator, lift the hood and their they are.
There's no 2.0L. Volvo 850 engine. Only 2.3L. & 2.4L. ...
The diesel turbo can only fit on a Volvo 850 with a little fabrication.
First be sure the bulbs are good then check the switch.