Thanks ROcket. I'll have them read the code again on Monday and if it's O2 sensor, which I'm sure it is, I'll have them go ahead and put the new one. Thanks for the help.
BTW, about 10 minutes ago, I unplugged battery to see if that would clear fault (not sure, but got mixed info on this in the search)... I'll let you know.
...Hooked battery back up and started car. CE light is gone! Not that it matters really, I'm sure it'll come on next time I drive the car and I'll take it in. Thanks for all the valuable info Rocket.
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)