Code Enable Criteria

Conditions for running DTC:

• Barometric pressure is greater than 75 kPa.
• Engine coolant temperature is 18-230°F (-8 to 110°C).
• Intake air temperature is greater than 18°F (-8°C) at engine start-up.

Conditions for setting DTC:

• HO2S 1 voltage remains less than or equal to 450 millivolts for 30 seconds.
• Maximum HO2S 1 voltage remains less than 450 millivolts.