OBC: Engine warning?
 

Hello, last night on my 2001 S60 2.4 D5 on OBC appeared message:Motor Necessito Assist-Italian (literally translated: Engine needs assistance). I am wondering what can cause this message,because when i turned car off,and back on,message disappeared. Same situation happened today,and it has disappeared again. Car has near 130.000km,and all fluids,filters and belts have been replaced few months ago. Engine is working normally,even when code appear...Warning triangle is not flashing when message appears. Could this be some kind of warning that I need to do some service,because OBC wasn't reset when service was done...
tnx