When Monitored

This diagnostic runs when the following conditions are met:

• With the engine running.
• With the vehicle speed above 96 km/h (60 mph).
• Throttle open for a minimum of 120 seconds
• Catalytic Converter temperature greater than 600°C (1112°F).
• With the downstream Oxygen Sensor in a rich state.
• ECT reading greater than 70°C (158°F),
  • During a decel fuel shutoff event, the downstream Oxygen Sensor should switch from rich to lean within a specific time.