Code Enable Criteria

For DTC to run, the following conditions must be met:

• No active MAF, IAT, or VSS DTCs are present.
• Coolant temperature is -40 to 158°F (-40 to 70°C).
• Air temperature is 19°F (-7°C) or more.
• Engine is running for more than 2 minutes, and less than 22 minutes.
• Vehicle speed is more than 5 MPH for more than 1.5 miles.
• Mass Airflow (MAF) average reading is more than 23 grams/second.

DTC will set when allowed time for engine coolant to reach a preset temperature has been exceeded.