Code Enable Criteria

Conditions for running DTC:

• DTCs P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0125, P0128, P0201, P0202, P0203, P0204, P0205, P0206, P0410, P0440, P0442, P0443, P0446, P0449 or P1441 is not set.
• System voltage is 9-18 volts.
• Intake air temperature is less than 95°F (35°C) at start-up.
• Engine coolant temperature is less than 95°F (35°C) at start-up.
• Intake air temperature and engine coolant temperature are within 42°F (6°C) of each other at start-up.

Conditions for setting DTC:

• HO2S 2 voltage remains within 150 millivolts of bias voltage or about 450 millivolts for a longer amount of time than it should. Amount of time ranges between 100-130 seconds depending on engine coolant temperature at start-up and average airflow since start-up.