Conditions for Setting the DTC

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The ECM determines that the modeled ECT has met the calibrated target of 79°C (174°F) and the measured ECT is less than 53°C (127°F) and the start-up ambient temperature is between 10° and 52°C (50° and 126°F), for greater than 1 s.
OR
The ECM determines that the modeled ECT has met the calibrated target of 59°C (138°F) and the measured ECT is less than 13°C (55°F) and the start-up ambient temperature is between -7° and 10°C (19° and 50°F), for greater than 1 s.