P0113

Diagnostic Chart:

Wiring Diagram:

CIRCUIT DESCRIPTION
The Intake Air Temperature (IAT) sensor is a thermistor that controls signal voltage to the PCM. When the air is cold, the sensor resistance is high, therefore the PCM will see a high signal voltage. As air warms, the sensor resistance becomes less and the voltage drops. This is a type B DTC.

CONDITIONS FOR SETTING THE DTC
^ The engine has been operating for 8 minutes.
^ The IAT is less than or equal to -40°C (40°F).
^ The conditions were met for 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
A possible poor performance problem may exist during cold weather operation.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The PCM will turn the Malfunction Indicator Lamp (MIL) off after three consecutive trips without a fault condition.
^ A History DTC will clear after forty consecutive warm-up cycles during which the diagnostic does not fail (the coolant temperature has risen 5°C (40°F) from start up coolant temperature and engine coolant temperature exceeds 71°C (160°F) during that same ignition cycle).
^ Use of a Scan Tool will clear the DTC codes.

DIAGNOSTIC AIDS
The scan tool displays intake air temperature in degrees centigrade. Refer to Intermittents. - Intermittent Malfunctions

A skewed sensor could result in poor driveability complaints. Refer to Temperature vs Resistance. Specifications

TEST DESCRIPTION
The number(s) below refer to the step number(s) on the Diagnostic Table.
2. This step determines if P0113 is a hard failure or an intermittent condition.
3. This step will determine if there is a wiring problem or a malfunctioning PCM.