The same error code showed up on my 1998 C230 too. Rather than trying to figure out the problem(s) as suggested in the other posts on this forum (which I did and ended up wasting a lot of time) my advice is to bring it to a mechanic with the Mercedes Benz STAR diagnostic scanner (basically a laptop) and it will tell you exactly what the problem is.
In my case, it was the MAF. So I bought one from autohauz (https://www.autohausaz.com/search/pr...ber=0280217114
) and was able to replace it myself.