Condition 3
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 the internal HO2S signal voltage after a decel fuel shut-off is less than 1.7 volts.
- The above condition exists for more than 4 seconds.