Engine management light volvo s40 problem

https://www.matthewsvolvosite.com/volvo-1999-and-newer-codes

You will get a misfore and the engine light will come on.

Ignition timing is controlled by the engine management computer and is not adjustable. Valve timing is set at a fixed position when the timing belt is replaced and not adjustable.

cd off?...radio still work...

needs a tune up.

An engine control unit (ECU), also known as power-train control module (PCM), or engine control module (ECM) is a type of electronic control unit that determines the amount of fuel, ignition timing and other parameters an internal combustion engine needs to keep running. It does this by reading values from multidimensional performance maps (so called LUTs), using input values (e.g. engine speed) calculated from signals coming from sensor devices monitoring the engine.

the may be caused by a misfire,the first thing to do is scan the computer for any stored codes as these codes can help a great deal, so start with the scanning first, auto zone and some other part stores will scan it for free ,just write down the codes and we will go from there.

is there plenty oil in it my v70 kept doing it and tuned out oil when running was low

The best thing is to go to your local Volvo maintenance shop or Volvo experts to find out whats the problem..usually the coomon ones I think is the programs inside its ECU unit..you try this..ask the volvo experts to reset the ECU and lets see..if problem arise then it is no doubt you might need the sensor..hope this help..

my car volvo s40 2000 had problem with engine managment light. I took it to the garage & they did dignostic check and the problem was(reset the camshaft valve)he gave me the part nomber and i put new part in ad problem solved.i do not know the name of part but this part is next to the spark plugs on right hand side,its got 4 bullts and the wire pluged in to it. It might be not problem with your car becaus macanic told me that this is not the common foult with s40, with yor car it may be sensor. good luck