Enable criteria

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

General condition for this diagnostic trouble code: Atmospheric pressure must exceed 72 kPa as well as coolant and intake air temperature must exceed -7°C.
Engine running. Closed loop active. Coolant temperature above 70 °C. Sensor pre-heating active. Vehicle speed above 0. A counter accumulates the time during which all the conditions are fulfilled. Another counter accumulates changes in sensor voltage.