Well, the light came on again, I will check what code I get this time.
The car has 67 K on it. When I look at the BOSCH OEM spec for this O2 sensor it lists it as a 60K mile sensor only, not a 100K like the newer ones. I will replace it anyway. also ETC sensor sounds like a typical MB problem, had to do it on my 86 300E as well.
I have gotten the codes form you guys, thank you.
Still not clear what code 2 is. It sounds like O2 sensor.

Thanks a bunch for all the help.

__________________
Regards

Mino Erhan Dallas, TX
'97 SL500 40th A.E.
'97 S320
'01 ML320
'85 Peugeot 505 SW
'07 BMW R1200RT
'74 Suzuki GT750