Conditions for Running the DTC

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

No OSS DTCs P0722, or P0723.
No TFP DTCs P1810, P1815 or P1816.
The system voltage is 8-18 volts.
The throttle position is greater than 8 percent.
The engine speed is greater than 500 RPM for 5 seconds.
OSS speed is 50 RPM or greater.