Hello,

The reduced power engine light came on my 2004 Volvo s80 this morning on my way to school, I thought nothing of it and just drove to school let it sit for 6 hours and then when I came back out I started it up and it didn't give me that error problem. It caused my front right headlight to go out and is now giving me the error multiple bulbs out but one of my position lights has been out for a week now so is it just the right front bulb going out the reason it caused the reduced power warning because I never got any problems with the engine shaking when it gets up to a certain speed like everyone says happends to them. Please help!!!!

 

There is most likely codes stored in the engine control module.