DTC P0112: Intake Air Temperature (IAT) Sensor Circuit, Low Input: Condition

DTC is set when Engine Control Module (ECM) detects Intake Air Temperature (IAT) sensor voltage is lower than 0.16 volts for 5 seconds continuously (low voltage - low resistance - high intake air temperature). MIL is illuminated when ECM detects malfunction during first drive cycle. DTC is also set when intake air temperature is high and IAT circuit resistance is low. Possible causes are:

• ECM malfunction.
• IAT sensor malfunction.
• IAT sensor circuit malfunction.