Code Enable Criteria

Conditions for running DTC:

• Intake air temperature is 14-158°F (-10 to 70°C).
• Fuel tank level is more than 25 percent.
• Engine coolant temperature is greater than 176°F (80°C).
• Barometric pressure is greater than 11 psi (75 kPa).
• Engine is running at a steady speed.

Conditions for setting DTC:

• HO2S-1 voltage remains 300 millivolts or less for at least 10 seconds.
• HO2S-1 voltage remains 600 millivolts or greater for at least 10 seconds.