Conditions for Setting the DTC
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Conditions 1
- The ECM has determined that the HO2S internal sensing element resistance is less than a predetermined threshold.
- The condition exists for more than 4 seconds.
Conditions 2
- The ECM detects that the calculated HO2S temperature is less than 600°C (1,112°F).
- The condition exists for more than 4 seconds.