P0030 or P0036
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects that the affected HO2S heater low control circuit voltage is not within a specified range.
- DTCs P0030 and P0036 set within 3 seconds when the above condition is met.