Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The ECM turns off the MIL during the third consecutive trip in which the diagnostic test runs and passes.
A scan tool can clear the DTC.
The ECM clears the DTC from ECM history if the vehicle completes 40 warm-up cycles without an emission related diagnostic fault occurring.