Check Engine Light 94' E-320
 

My check engine light came on tonight leaving the office. Anyone have any quick suggestions I can check before taking it to the shop?
I'm close to having the 60K service done and thought this was a sign or the weather is a little colder than normal tonight and it might be a freak thing.
TIA
DSR
94' E-320
56,800 miles

You can pull the code yourself - check the archives - there's lots of stuff.

I know you car has low miles but the dreaded wiring harness is already my first thought, if you have not already replaced it, it will cause many dead end chases to problems that dont exist except that the harness is the culprit.
Chris