Conditions for Setting the DTC
- Lean to rich average time is less than 12.8008 counts.
- Rich to lean average time is less than 13 counts.
- Closed Loop stoichiometry.
- Engine Coolant Temperature (ECT) is greater than 70 °C (158 °F).
- System voltage is greater than 10 V.
- Engine run time is greater than 60 seconds.
- Purge Duty Cycle (DC) is less than 20%.
- The RPM is between 1,600 and 4,300 RPM.
- Airflow is between 9 and 40 g/sec.
- 2 second delay after conditions are met.