Return Blank with VLookup

Ok I have a range of 26 cells to put a letter into. On the sheet2 "ABC" I have the Letter it's type C or V and it Value. Now not every cell will contain a letter. Instead of seeing "#N/A" I don't want to see anything I want it left blank. I tried =if(b2)isblank,"",VLOOKUP(B2,ABC!$A$2:$C$28,2,FALSE) and wont work. I tried a few other things I found on the web but nothing works. Can anyone help me.