Conditions for Running the DTC: P2243

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 P0030, P0031, P0032 are not set.
The ignition voltage is between 10.7-18.1 volts.
The engine is running.
HO2S 1 heater is at operating temperature for at least 10 seconds.
DTC P2243 runs continuously when the above conditions are met for 2 seconds.