When Monitored

This diagnostic runs continuously when the following conditions are met:

• Closed loop fuel control.
• Engine run time greater than one minute.
• Engine coolant temperature above 70°C (158°F).
• Engine speed above 1500 RPM.
• Vehicle speed above 138.2 km/h (59 mph).
• Catalytic Converter temperature between 500°C and 850°C (932°F and 1562°F).
  • During a decel fuel shutoff event, the Downstream Oxygen Sensor should switch from rich to lean within a specific time.