Conditions for Running the DTC

WARNING: This page is about a different car, the 2005 GMC Yukon XL, 2005 Chevrolet Suburban, and 2005 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

DTCs U0107 or P2108 are not set.
The ignition switch is in the crank or run position.
The ignition voltage is more than 5.23 volts.
This diagnostic runs continuously when the above conditions are met.