Conditions for Running the DTC

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The engine is running for more than 1 second.
The engine speed is between 500-2,500 RPM.
The ignition 1 voltage is more than 11 volts.
The above conditions are met for more than 2 seconds.
DTC P0107 and P0108 run continuously when the above enabling conditions are met.