This test module serves the purpose of checking the oxygen sensors for interchanged plug connections.
The vehicle emissions are increased to impermissible levels.
- MIL lamp ON
When work is carried out on the exhaust system that requires the plug connections of the control and/or monitor sensors to be disconnected, this test module must be carried out on completion of this work.
- Engine running at idle speed
- Coolant temperature > 80 °C
- Catalytic converter temperature > 320 °C
- None of the following fault codes entered in the DME fault code memory:
Fault locations |
Fault description |
|---|---|
(19) 25 |
Activation of oxygen sensor heating before catalytic converter, row 1 |
(37) 55 |
Activation of oxygen sensor heating before catalytic converter, row 2 |
(3D) 61 |
Activation of oxygen sensor heating after catalytic converter, row 2 |
(4F) 79 |
Activation of oxygen sensor heating after catalytic converter, row 1 |