The "O2-Sensor" and "CHECK ENGINE" lamps have identical wirings. Have the same function with a different names.
"O2-Sensor" - from MY1986 up to MY1987
"CHECK ENGINE" - from MY1988

The US-version models (code 49/1 in the data-card) do not have "CHECK ENGINE" lamp from MY1992.


N.B. The California-version models have code 49/4 in the data-card.



Salutte!