Conditions for Setting the DTC
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM internal HO2S voltage is greater than 4.73 volts.
- The condition exists for greater than 4 seconds or 600 seconds if the fuel level is less than 12 percent.