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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 a parts store 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.

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∙ 15y ago

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What is wrong when engine light turns on?

The check engine or service engine soon light comes on to alert you that there is or was a problem with the emissions system on your vehicle. If the light comes on steady and stays on, it means that there is a problem and you should have it checked out soon. If it comes on and flashes, it means you will cause damage if you continue driving.


Mazda tribute engine light?

When the check engine light comes on, it's a good indication that something is wrong with your engine.


What does it mean when the service engine soon light comes on in a 1997 GMC Suburban?

it means you need to connect it to an odb 2 computer and get the code for whats wrong


What does it mean if the Service Engine Soon light comes on on a Pontiac Firebird?

It means you drive down to you local car parts store and ask to borrow one of their engine light code readers to see what the problem is, the light indicates there is something wrong, that something wrong could be 100 things, you need the reader to find out whats wrong.


What is wrong when the service engine soon light comes on and truck is running rough?

When the service engine soon light comes on it means the computer has found a problem, it should post a code in the computer memory. Plug a scanner into the port and it should give you the code. From that you can look up what the code means and that will give you some idea of what the problem may be.


What does it mean when the engine trasmissions light comes on?

If an engine transmission light comes on in the dashboard there can be a potential problem with the drive-train. The engine's computer should receive a diagnostic to determine if there is anything wrong with the transmission.


What is the difference between the check engine light and service engine soon light?

The Check Engine light comes on when the ECU detects something is wrong with the emissions system on the vehicle. You will need to have the ECU scanned with an OBD2 scan tool. The Maintenance Required light comes on to alert you to the fact that some scheduled maintenance, as outlined in your owners manual, is due. It can be as simple as an oil change or can be something else. Look in your owners manual to find out what service is needed.


Saturn Vue 2003 service engine soon light is on?

Take a look here askville.amazon.com/service-engine-light-wrong-saturn-Vue-2003/AnswerViewer.do?requestId=3645084


Service engine soon on Ford Taurus how can you correct it?

service the engine...... or disconnect the battery for a few moments to clear the memory on your cars computer..... please be safe and do it in a way that you do not hurt your self. most of the time the service engine light comes on, there may be damage to the engine, the computer cant tell you when something is about to go wrong, it can only tell you after it has.....,..


Service engine soon lite comes on What is wrong?

you need to scan the car to find out what is wrong. if you have a auto zone near you they will scan it for you.


When you put gas in your 1998 ford coupe and now the service engine light came on and it has a little hesitation to it when stopped at red light why is this?

When the check engine light comes on it's the computer's way of telling you that it has detected a problem. Connect the vehicle to a code scanner and it will tell you what's wrong.


What is wrong if the check engine light comes on at idle and the engine run rough on a 1994 Mazda 929?

Check the engine oil, sometimes when the oil is low the check engine light comes on while sitting still and goes out when you accelarate.

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