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Any number of problems can cause the Check Engine light to illuminate. Your best bet is to find a mechanic who can read the codes and tell you what the specific problem is. Shop around, though, because the cost of having a mechanic do this can be anywhere from $15 to over $100. It's a simple procedure, but like anything, if they have a corner on the market they can change anything they want. Or you can do it yourself...it's easy. You can purchase your own code reader through your local auto parts store or on line. I've seen OBD II code readers for as little as $50 on line. The OBD II will work on most post 1996 cars, but not all, so make sure the reader you buy will work on your particular car. Good luck.
It is on because the ECU has detected a problem with the emissions system. It can be a number of things. Have the ECU scanned with an OBD scan tool and that will retrieve the code that has been set. Use that code to diagnose the problem. The code will tell you what part is being effected, not necessarily what part is bad.
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle.
Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions.
Wiki User
∙ 2012-09-19 11:44:25
Wiki User
∙ 2009-09-20 05:18:52In a vehicle sold in the US after 1996, the 'Service Engine Soon' light will come on when the powertrain / engine computer determines that emissions will be increased by a fault in the vehicle's systems. The 'Service Vehicle Soon" light is entirely different.
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When you disconnect the battery to reset check engine light does it reset any issues?
No, it may or may not reset the check engine light. If you did not repair the problem that caused the light to come on it will just come back on.
Will cold weather make your check engine light come on?
Cold weather can make your check engine light come on for various reasons. It could be caused by low fluids or a sensor.
How should i reset the check your engine light for my 2000 Cadillac Catera?
Have the problem that caused the check engine light to come on repaired. They will reset the light with an OBD2 scan tool. The light will just come back on if the problem is not repaired.
How do you get the check engine and reduced speed light off?
By having the problem repaired that caused the light to come on and speed to be reduced.
Does the check engine light come on because your gas is halfway full?
No, the check engine light does not come on because your gas is half way full. The check engine light will come on if there is a problem with the engine.
How do you cancel a check engine light on a 2002 pathfinder?
First have the problem repaired that caused the light to come on in the first place. They will reset the light.
Will the check engine light come on if you take the seats out of a 2005 Hyundai elantra?
No the check engine light will not come on
Your check engine light cam on after muffler work could they have caused the light to come on?
Probably not, get the check lite read with a reader and deal with the problems it indicates.
Check engine light won't come on?
If an check engine light does not come on it is a good thing. When your check engine light comes on, it means you need service done on your vehicle.
How do you remove check engine in Tacoma 1996?
By repairing the problem that caused the Check Engine light to come on in the first place. You can then reset the CE light with a scan tool. Reset the light without repairing the problem and it wll just come back on.
How do you reset the check engine light on a 1998 ford contour?
Easy, fix the problem that caused the light to come on in the first place.
How do you reset the engine light on a 2006 Honda Civic?
If you have repaired the problem that caused the Check Engine light to come on, then you need an OBD2 scan tool to reset the light and clear the fault code from the ECU. If you have not repaired the problem then it will just come back on.
