Code Enable Criteria

• Vehicle has traveled more than 0.5 mile with vehicle speed more than 25 MPH.
• Calculated average airflow is more than 20 grams per second.
• Engine run time is between 30 seconds and 30 minutes.
• Start-up ECT was less than 95°F (35°C).
• IAT is more than 19°F (-7°C).
• No CKP, ECT, EVAP leak, fan control, fuel injector, fuel tank pressure, fuel trim, IAT, knock, MAP, misfire, O2S1, TP, vehicle speed, P0420, P0446 or P1441 DTCs are set.

DTC sets when calculated accumulated airflow has been exceeded (based on predicted airflow) when ECT sensor temperature has reached 104°F (40°C).