My "99 Kia Sephia has both the check engine light and the O/D OFF light on & flashing. It has had trouble lately shifting between 2nd & 3rd (slipping). I plan on purchasing a scan tool, but have to wait until pay day next week. Any ideas?
Re: Check engine light on and O/D OFF light flashing
I was facing a similar problem when I bought my car, I think the "check engine" lit due to a problem with shifting control system which obviously made the "O/D-off" flashes.The best solution in this case is to replace the malfunctioning shifting control system (a closed steel box that works like a computer).This is what I did and since then it's running perfectly.
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check for a burnt out bulb...most cars will do this as a warning telling u theres a lite out...also check for a bad turn signal relay and or blown fuse..if they r good replace the multi function switch( thats what u use to turn on the turn signals)
take you car to an auto parts store that checks your check engine code for FREE most of the chains do.take a pen and paper thats in case they cant give you a print out .you need the codes and what they are also get the trouble shooting tips for those codes .if you still need more help repost with the codes and what they are..... example p0100 mass air flow circuit malfuntion.todays cars all start with those codes it help you narrow down the problem
There are many different sources for the light to come on. Anything that caused combustion to fail, commonly called a misfire will set the light. Various sensors such as oxygen sensors that evaluate the exhaust before and after the gases are burned in the converter. Transmission codes may set the check engine light to appear. If the car is running okay, get it fixed in a reasonable amount of time such as within the month. It will probably save you fuel if you do. However if the Check engine light is flashing, you should not be driving it as damage is being done to the converter.