Question about 2003 Ford E250

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Service Engine Soon Light

Back on my 2003 E250 - Service Engine Soon light came on and stays on. Triton 5.4; all gauges say temp, oil, battery all ok; oil up to level; engine is running well - starts instantly, runs strong, no knocks. Power steering fluid low; will fill it tomorrow. Air cleaner is clean/relatively new. Don't know history or status of fuel filter. Oil changed about 2000 miles ago; don't know about oil filter but assume it's new also. 143,500 miles on the vehicle; bought it used 2 days ago.
So what could it be - automatic warning based on the odometer or a computer-generated interval; or some other warning that doesn't show via other gauges?
Thanks
Matt

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On all cars and trucks that are 1996 or newer they have a system called obd2 and the computer monitors anything thats plugged into it like sensors. The light is on because your computer has found a problem with 1 or more of them. If you want to know what area is having a problem you need to have the codes read by a obd2 scanner or code reader some auto part stores do this for free or oil
change store or mechanic shop

Posted on Mar 24, 2009

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Most auto parts stores will run a computer check that will give the codes for what is wrong they will also print it out for you if you ask them to for free.

Posted on Mar 29, 2013

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