I think alot of folks get confused about these two.
The Service Engine light comes on after 7500 miles, or after 750hrs of driving, or after 12 months, whichever comes first.
The Check Engine light, also called the Malfuntion Indicator Lamp(MIL), is the more serious of the two. It comes on if the cars computer (engine diagnostic system) likely has a "code" that needs to be read. Go to a AutoZone or dealer and get have it read. AutoZone does it free.
I think alot of volvo drivers see the Service engine light come on and pull over, get scared, and its not necessary,....if people knew the difference between the Service light and the Check Engine light they'd be better off.
Feel free to give me feedback or comments about this issue.
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