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How do you turn off the check engine light on a 2002 jeep liberty to pass smog?
Wiki User
∙ 14y ago
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.
You will have to repair the cause of the light to pass smog. If you simply shut the light off, the smog test will still fail.
Wiki User
∙ 14y ago
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Check your gas cap.
How do you diognose engine light problem on a 2002 Jeep Liberty?
Scan tool, will give you a trouble code as to why the computer turned the check engine light on.
How do you repair a check engine light on 2002 Jeep Liberty?
Click on the link to your right for more information.
How do you reset the check engine light on a 2002 Jeep Liberty?
You can unhook the battery or use a scan tool.
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My 02 liberty check engine light has blinked in the past. It was because my battery needed to be replaced. Count the number of times it blinks and search for that blink pattern online for better information.
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