Conditions for Running the DTC

WARNING: This page is about a different car, the 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0300, P0301, P0302, P0303, P0304, P2096, P2097, P2177, P2178, P2187, P2188 are not set.
The engine speed is between 1,320-2,840 RPM.
The engine load is between 21-68 percent.
The engine is operating in Closed Loop.
The calculated exhaust mass gas flow is between 10-42 g/sec, and stable.
The calculated catalyst temperature is between 525-750°C (977-1,382°F), and stable.
The ambient temperature is warmer than -15°C (+5°F).
The rear HO2S is at operating temperature.

This diagnostic attempts one test during each valid idle period once the above conditions have been met. This diagnostic attempts up to 4 tests during each drive cycle.