SOURCE: service engine soon light on
you need to put it on a computer to find what the code is such as on o2 sensor or a number of other things. once you know the codes you can fix the problem
SOURCE: engine service light on
I had the 999 code flash instead of number on the digital trip set
no headlights or parking lights
no interior light
and the horn appeared to be stuck
I replaced the battery! All fixed!!!
the barrery was too low to power the car
SOURCE: yellow wrench service soon light comes on
that lights up at certain mileage intervals usually around 50,000--75,000 100,000 and so on it doesn't mean that the part is bad it just means that certain things should be replaced or cleaned so the dealer can get you to bring it in .the service manual will tell you what it calls for at what mileage then the dealer can turn it off or you can once you look it up in a manual.
SOURCE: Grand Am 2003 "service engine soon" light
The service light means something is wrong with the car and it needs attention now. Get the codes checked and that will tell you what is wrong with it.
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