The possibilities are huge without having the codes read. Why not do that? With OBDII mnay shops can read the codes for you. It would save you tons of diagnostic frustration.
It could be a misfire from a fouled plug, bad resistor, or other thing.
It could be an O2 sensor
It could be the MAS
Tranny problems trigger the CE light too
And on and on...
1998 C230 "Black Betty"