When Monitored

This diagnostic runs when the following conditions are met:

• Engine off time is greater than 480 minutes.
• Ambient temperature is greater than -64°C (-83°F).
• Vehicle has been driven for one minute over 35 mph.
  • Once the vehicle is soaked for a calibrated engine off time and then driven over the calibrated speed and load conditions for a calibrated time, the PCM compares the Ambient, Engine Coolant and Intake Air Temperature Sensor values.