DTC P0110 - Intake Air Temperature (IAT) Sensor Circuit Malfunction: Conditions

WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.

DTC is set if input voltage from IAT sensor is less than .14 volt or greater than 4.8 volts when engine is started. Intake air temperature is 104° F (40° C) greater than engine coolant temperature. Possible causes are:

IAT sensor malfunction.
Open or short circuit between terminal "A" on IAT sensor and terminal No. 3V on Engine Control Module (ECM).
Open or short circuit between terminal No. 3AB on Engine Control Module (ECM) and terminal "B" on IAT sensor.