Generic
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    HO2S Heater Control Circuit

GM
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    HO2S Heater Control Circuit Conditions
Cause:
    Key on, system voltage 8-18v, then the PCM detected an incorrect circuit condition on the low side driver circuit for the HO2S-12.