2005 Hyundai Santa Fe Oxygen Sensor?

That means that the problem is before that o2 sensor and it's probably a too rich/lean error code.I'd check all the basics first for example if the engine has a bank 2 sensor 1 that would tell you that the side of the engine where cylinder no1 is located has a problem such as a faulty plug.If it doesn't have a bank 2 no1 sensor then something that either gives it spark/fuel/air is messed and I'd probably start with checking any vac hoses, vac lines for leaks and then the plugs/wires etc.

Hope that helps and best of luck.

My Santa Fe will drive possible 2-3 miles n bog out then shut down...when starting back up will not go in gear w out dying..is this my oxygen sensor or something bigger...

I actually had this changed as I had the same message..it freaked me out initially because I was travelling across country when the light came on..in the middle of nowhere..luckily it wasn't URGENT and had it changed a bit after i got back home.

I was told it had something to do with oxygen not moving properly through the gas lines

geez all these computer type things~!!!

Ive had to replace a few differential pressure switches, all they do is tell u if ur D.P.F is blocked and it cant do a regeneration by itself, that will also bring up the code

Its telling you that you need a Honda.