Conditions for Setting the DTC
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects an open in the heater circuits of the HO2S when the heater is commanded OFF.
- The condition exists for more than 4 seconds.