Oxygen Sensor

Check function:
[D] 200 - To carry out this test, the oxygen sensor must be at operating temperature. The indicated voltage signal is tapped off in steps and fluctuates between 0.02 and 0.85 V.

When the oxygen sensor is not in operation, or the wire to the DME control unit is interrupted, a constant value of 0.45 V is indicated. This value is also indicated when no oxygen sensor is installed.