99 seville sls very sick..

HI?
nice meet you...
i am a south-korean.. sorry for my english.
i have got a cadillac seville sls(1999)-used
but.. i am confused becouse my car is out of order. i don't know what wrong with my car.
please let me know ..
WHAT IS IT MEANS?
what shoud i do fot it.
infomation (displayed on Speedometer Cluster)
- "check engine" is illuminated
1. EXP ID 82
2. EXP ID 23
3. EXP ID 125
4. EXP ID 34
5. EXP ID 140
today my car is very sick...
please..
my email is pplpp99@hotmail.com
thank for you favor..