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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 962 (6.4L - DTCS P000B To P0205 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P0112-Intake Air Temperature Sensor 1 Circuit Low >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

The Intake Air Temperature (IAT) Sensor diagnostic, under cold start conditions, following a start to run delay time, compares the outputs of the ambient, engine coolant and intake air temperature sensors. If the Engine Coolant and Ambient Air Temperature Sensors agree and the Intake Air Temperature Sensor does not agree, the Intake Air Temperature Sensor is declared as irrational. If declared irrational a second comparison will be done after a short drive cycle.

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