July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Fail-Safe Mode
WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
Fig 1: Identifying Engine Operating Condition In Fail-Safe Mode