Conditions For Setting DTC

WARNING: This page is about a different car, the 2003 Saturn LW300 and 2003 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

The calibrated amount of airflow at any time has been met.
The calibrated amount of engine run time at any time has been met.
The actual ECT deviates by more than 22°F (12°C) from a predetermined calibrated ECT.