Conditions For Running DTC

WARNING: This page is about a different car, the 2002 Pontiac Aztek and 2002 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0121, P0122, or P0123 are not set.
The engine has been running for a period of time that is determined by the start-up coolant temperature. The time ranges from 2 minutes at less than -22°F (-30°C) to 1 second at more than 86°F (30°C).
The throttle angle is less than 2 percent when the engine speed is less than 3000 RPM; or the throttle angle is less than 30 percent when the engine speed is more than 3000 RPM.