Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- The PCM detects that the affected HO2S heater low control circuit voltage is not within a specified range.
- DTC P0030 or P0036 sets within 3 seconds when the above condition is met.