My OKI 5200 is saying it has a paper jam open front cover there is no paper jammed and i have looked everywhere for a problem and cannot find one. Still it won't print until the paper jam problem is fixed.

That is a paper jam code. Reopen the cover, and clear all paper jams. Close the cover, and then I would reset the machine by turning it off and on if the code continues. http://www.german-parts.de/oki_manual/paperjam/stau_b400_series.pdf

Paper jam is initiated by a sensor that does not register (or tell the logic board it has registered) a movement of the paper through the printer. Try finding out what sensor is near the point the paper stopped. Look if anything id blocking a optical sensor, or any small lever is blocked in free movement. Close all covers correct and make sure nothing is blocking the covers. Not even just a small piece of paper.

where the rollers are located is a small electric eye sensor that detects the paper, I would almost put money on it that there is dirt of some kind down in there, and it is blocking the sensor, so it says "jam" even if there isn't any paper in the printer at all. Give it a real good cleaning in that area and all should work as it is supposed to.

Your paper feder belt has ink on it and will not feed the paper. Remove the rubber belt and clean it good and clean and use compressed air on the printer tray area. If this does not work open the front feeder tray and set your computer to print from it. After about 500 copys it will normally have c leaned itself and be ready to feed from the main roller.

open all of the paper casettes.make sure no jam there. then with the cassettes open open and close all of the covers. it is possible you have a bad sensor saying a false jam

Check underneath the toner/drums for the paper.

One of the sensors in the paper path is stuck. Take the printer to a repair agent, they will be able to fix this issue.

If you have removed all drums, fuser, transport belt, cassette and duplexer if fitted and ensured there is no paper, and turned off and on printer whilst disconnected from pc, and it still instantly comes up with a jam, then I'll tell you where it is... open front cover, in center,front.. there is a cover a little bigger than match box, it clicks off, under here is your jammed sheet , people tend to just rip out the jam, and leave behind a small section of the paper, that you cant see, unless you look very carefully or remove little cover to expose it.

I too kept getting the front cover paper jam despite followings Oki's paper jam removal instructions and blowing out the printer with compressed air.
In my case, the paper drawer was the problem.  When you pull out the drawer there is a spring loaded piece of white plastic at the very front of the drawer.  In the center of that is a gray rubber strip.  That strip had come loose in the center and bowed out, preventing paper from exiting the paper drawer.  I manually removed the strip, clipped off a little piece from one end so that it fit back in the recessed cavity on the white plastic piece and glued it back down.
This should be applicable to all Oki c5xxx color LED printers.

Try to force a sheet into the feeder in order to clean and possible remove any piece of sheet. I had the same problem error 380: paper jam in oki 5300, but this time it said to open the front cover...