Conditions for Running the DTC

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The engine is operating.
The ignition voltage is greater than 10 volts.
The calculated exhaust gas temperature is between 250-800°C (482-1,472°F) for greater than 90 seconds.
The HO2S heater control is enabled for greater than 10 seconds.
DTC P2232 and P2235 run continuously once the conditions above exist for greater than 10 seconds.