It would be much faster, friendlier, and more efficient for the OP to tell us what they see as a potential error on their coin, rather than ask this 'open' question.
I wouldn't say there are known errors just for ypur Nickel. All years on all denominations can have all the known Mint Errors.. You are the one that needs to know what to look for.. Here is a good website to educate yourself with Mint Errors - http://www.error-ref.com And for Varieties - http://doubleddie.com
There are SOME wags (I'm not among them.) who insist that ALL 2006-date nickels are an "error" in that they have Jamie Franki's new obverse.