Conditions for Running the DTC

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

No IMS DTC P1819, P1820, P1822, P1823, P1825, or P1826.
The engine speed is greater than 500 RPM for 5 seconds and not in fuel shut off.
The time since last gear selector range change is greater than 6 seconds.