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Home >> Dodge and Ram >> 2020 >> Durango R/T, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (3.6L - DTCS P0073 To P0222) >> DTC Troubleshooting >> P0111-Intake Air Temperature Sensor 1 Performance >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different variant/trim than selected.

The Intake Air Temperature (IAT) Sensor rationality diagnostic looks at the outputs of three temperature sensors and compares them under cold start conditions. Following a start to run delay time the outputs of the Ambient Air Temperature (AAT) Sensor, Engine Coolant Temperature (ECT) Sensor, and Intake Air Temperature (IAT) Sensors will be compared. If the ECT and AAT Sensors agree and the IAT Sensor does not agree, the IAT Sensor is declared as irrational. If declared irrational a second comparison will be done after a short drive cycle.

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