The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
There's no Volvo 850 2000. What you likely saw was a S70.
There's no 2.0L. Volvo 850 engine. Only 2.3L. & 2.4L. ...
There are a few different ways to reset the check engine light on this vehicle. You can either have a mechanic use a scan tool, remove the battery cables and touch them together, or fix the problem to get the light to go off.
yes they are identical cars but you must do a complete swap (engine ECU as well) Kyle
Check and change the relay
The Volvo 850 does not have a non-interference engine. This means that if the timing belt breaks, then serious internal engine damage will inevitably occur.
The "Service" light is just a maintenance reminder that is triggered on mileage. The "Check Engine" light is triggered by emissions system problems. Typically the O2 sensors trigger the check engine light but also a fuel cap that is not tightened, or a misfiring cylinder.
Normal just alittle problem with your engine or your fuel tank go to the Jiffy lube and ask them about it if you don't check the engine or fuel tank.
The 1994 Volvo 850 crankshaft position sensor can be found on the back of the engine. You will need to remove the rear engine cover in order to access the crankshaft position sensor.
Check coolant in Radiator!!! Radiator might be empty, fill it, it's probably the reason why your engine is overheated
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area. auto zone does not have the obd2 scanner to check this ar out 1997 850 Volvo
Fix the problem and the light will go out. Normally on Volvo 850's the ABS sensor goes out (actually a wire comes loose inside the unit) this sensor is under the hood on the ABS unit.