Here is what I found.
94 E320- 124.032 , 104.992 eng. with OBD led/sw .
All 124.032 with check eng lamp/obd DTC module
N-59 [ emissions] have an:
02 sensor code of 2 flashs.
ETC sensor code 8
02 sensor heater code 12.
I have verified the code 2 on the same vehicle by purposely tripping the code by taking a short run after unplugging the 02 sensor .
So I would assume my charts to be correct.
If poster would like the codes- email me and I will send a copy...