July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC Parameters

Engine has been off for longer than 7 hours and 30 minutes.
Start-up IAT is greater than 50°F (10°C).
Vehicle has traveled at greater than 10 MPH for longer than 10 seconds.
IAT has increased by at least 5.4°F (3°C).
No IAT or ECT DTCs are set.

DTC sets when the difference between start-up ECT and IAT is greater than 27°F (15°C).