You are here check engine light home jeep check engine light questions answers jeep check engine light questions this page will list all the check engine light questions and answers asked of us pertaining to jeep vehicles some models include the liberty grand cherokee wrangler compass and patriot. The check engine light comes on when the jeep is idling and the air is on but it only happens if it is really hot outside then a day or two later it goes off by itself. When the check engine light illuminates on your jeep liberty it is the result of a problem code being sent from a sensor in the vehicle to the internal on board diagnostics obd computer it means there is an electrical problem you should have it looked at and fixed by a qualified mechanic before attempting to . A check engine light can indicate a broad spectrum of problems with your 2002 jeep liberty in some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. The 2007 jeep liberty has 7 problems reported for check engine light on average repair cost is 3370 at 80950 miles
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