Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The PCM/ECM will illuminate the malfunction indicator Lamp (MIL) during the first trip in which the diagnostic test has been run and failed.
The PCM/ECM will signal the IPC to turn ON the Service Engine Soon indicator.
The PCM/ECM will alternately disable 2 groups of four cylinders by turning OFF the fuel injectors.
The PCM/ECM will store conditions which were present when the DTC set as Freeze Frame and File Records data.
A history DTC is stored.