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.
- The PCM detects that the HO2S 1 voltage signal remains within the 300-600 mV range for more than 3.6 seconds.
- This diagnostic runs continuously.