When Monitored

This diagnostic runs continuously when the following conditions are met:

• With the engine running
• Vehicle speed above 96 km/h (60 mph)
• Throttle open for a minimum of 120 seconds
• ECT greater than 60°C (140°F)
• Catalytic converter temperature greater than 600° C (1112° F)
• Downstream oxygen 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.