Circuit/System Verification
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Allow the engine to reach operating temperature.
- Engine running, verify the appropriate scan tool HO2S Heater parameter is varying between 0.5-2 amp.
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.