When Monitored

This diagnostic runs when the following conditions are met:

• With the engine running.
• Vehicle speed above 96 km/h (60 mph).
• Engine Coolant Temperature (ECT) Sensor value is greater than 70°C (158°F).
• Throttle open for a minimum of 120 seconds.
• Catalytic Converter temperature greater than 600°C (1112°F).
• Downstream O2 Sensor in a rich state.
  • During a Decel Fuel Shutoff event, the Downstream Oxygen Sensor should switch from rich to lean within a specific time.