Conditions for Running the DTC

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

The engine is running for more than one second.
The ignition 1 signal is more than 8 volts.
The above conditions are met for more than one second.
These DTCs run continuously when the above conditions are met.