The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
It is possible for the check engine light to come on in a Pontiac Transport when using ethanol gasoline because it burns hotter than other gasoline. The check engine light might also come on if the oxygen sensor is bad.
How to reset service light on a 2004 grand am
The "Service Engine" light is the computer's way of telling you that it has something to tell you. Connect a scanner and see what it says.
There could be several reasons why a 2000 Pontiac Grand Am service engine light soon has come on. The engine may need a tune up, the timing belt may need changed, or even a bad fuel pump.
remove battery cable for 1 min
pontiac g6 check engine light car with wrench
There are many causes for a service engine light. You need to have it checked for codes. Then you can diagnose from there.
To reset a Service Engine Soon light, a person can disconnect and reconnect the battery. They can also fix the problem and use a scanner to clear the codes causing the light to come on.
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unhook positive batery cable for 5 mins
It means your engine needs attention.
Try disconecting positive terrminal of battery for 2 minutes