Engine Grounding
WARNING: This page is about a different car, the 2005 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Make sure the engine grounding terminal is properly connected to the engine.
When detecting a malfunction by self-diagnosis function on ECM, malfunction indicator light illuminates and malfunction occurrence is displayed. Calling the self-diagnosis result is performed by the Subaru Select Monitor.