P0030, P0031, P0032, P0050, P0051, P0052
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- The ignition voltage is between 10-18 volts.
- The engine speed is greater than 80 RPM.
- The HO2S heater is commanded ON and OFF at least once during the ignition cycle.
- The DTCs run continuously once the above conditions are met for 1 second.