Conditions For Running DTC
WARNING: This page is about a different car, the 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
- The engine is operating on alternative fuel.
- Engine speed is greater than 500 RPM.
- The engine has been operating for at least 2 minutes.
- The AF ECM determines the O2S has been at operating temperature for at least 2 minutes. The engine coolant temperature must be greater than 104°F (40°C) and the calculated mass airflow must be greater than 6 grams per second for 2 minutes in order for the AF ECM to determine the O2S is at operating temperature.