DTC Parameters

• Engine has been running at least 90 seconds after ECT has reached 40°F (4°C).
• Catalytic converter temperature is less than 1724°F (940°C).
• Commanded air/fuel ratio is 14.7:1.
• Battery voltage is more than 11 volts.

DTC sets when HO2S bank 1, sensor 2 is inactive (voltage is not fluctuating outside 421-479 millivolts range) for more than one minute.