Set Condition
The Powertrain Control Module (PCM) detects that the O2 Sensor Heater element temperature is below 600°C (1112°F) for 9.0 seconds or above 922°C (1692°F) for 20.0 seconds when the heater circuit is active. The heater temperature is obtained by measuring the heater resistance and calculating the heater temperature. Two trip fault. Three good trips to turn off the MIL.