Question about 2003 Ford Expedition

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Service Engine Light staying On

While riding down the road, the service engine soon light came on . My engine has just been serviced about two weeks ago.

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  • luxsuv_waki May 01, 2009

    I serviced my aircon and changed the blower, after I drove it for 20 min. the service engine soon light came on....

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  • 18 Answers

Alot of times a voltage drop to the O2 Sensor can cause your check engine light to come on. Even tho the O2 sensor is wrong fine.

Posted on Feb 09, 2009

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