P1112

Description
IAT SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE

Intake Air Temperature (IAT) sensor is a thermistor. PCM
applies and reads a 5-volt reference signal to sensor. When air is
cold, sensor resistance is high and PCM will measure a high signal
voltage. If air is warm, sensor resistance is low causing PCM to
measure low voltage.

Symptoms
You likely won't notice any drivability problems.

Causes

• IAT sensor voltage intermittently less than 0.14 volt.

Possible Solutions

• If DTC P0112 is also set, diagnose DTC P0112 before
  proceeding.
• Check for faulty connections or damaged harness.
• Replace IAT sensor