Set Conditions

Set Condition:
Cold start - the oxygen sensor signal voltage is below 0.05 Volts and greater than -1.00 Volts for a calibrated period of time. Closed-loop operation - if the closed-loop fuel trim is clamped rich and the sensor output voltage is below 0.05 Volts but greater than -1.00 Volts for a calibrated period of time. This is a two trip fault. Three good trips are required to turn off the MIL.