DTC P0131 Or DTC P0132: Condition

DTC P0131 is set when Bank 1 HO2S No. 1 maximum output voltage is .06 volts or less and average minimum output voltage is .03 volt or less, or when 4.5 volts or more HO2S circuit voltage is detected when 5 volts is connected to HO2S circuit at ECM.

DTC P0132 is set when Bank 1 HO2S No. 1 minimum output voltage of HO2S is 3 volts or more, or when Bank 1 HO2S No. 1 maximum output voltage is .74 volts or more and average minimum output voltage is .33 volts or more. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles.