Hey guys,
Im getting a few engine codes on my 06 cobalt lt. (~145,000 miles)
1) P0030 O2S Header Control Circuit Bank 1 Sensor 1 (two occurrences of this code)
2) P0135 HO2S Heater Performance sensor 1 (two occurrences of this code)
3) P0137 HO2S Circuit Low Voltage Sensor 2
The auto parts...
