DTC Descriptors
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.
This diagnostic procedure supports the following DTCs:
- DTC P0031 HO2S Heater Control Circuit Low Voltage Sensor 1
- DTC P0037 HO2S Heater Control Circuit Low Voltage Sensor 2