Saab: cold weather check engine light, weather check, saab 900

Question
It was very cold this morning and my 1997 saab 900 was very hard to start.  When i got it started the check engine light was on, any clue what it is?

Answer
Jake:
 More than likely, it is a temperature sensor. Best bet: go to an AUTOZONE (hopefully there is one near you) and get a free "check enginelight check", which will identify the relevant faulty item.
If no AUTOZONE, try other auto part chain stores.
 Good luck