DTC P0096, P00E9, or P0111
Diagnostic InstructionsDTC Descriptor
DTC P0096

Intake Air Temperature (IAT) Sensor 2 Performance

DTC P00E9

Intake Air Temperature (IAT) Sensor 3 Circuit Performance

DTC P0111

Intake Air Temperature (IAT) Sensor 1 Performance

Circuit/System Description

Component

Description

B111B Turbocharger Boost/Intake Air Temperature Sensor

The assembly has several functions:

Pressure

The signal voltage increases when the pressure increases.

Temperature

The temperature sensor is a negative temperature coefficient thermistor, a resistor which changes based on temperature.

  • Low temperature produces a high resistance:49,882 Ω@-40°C (-40°F)
  • High temperature produces a low resistance:67 Ω@150°C (302°F)

Compressor Air Intake Turbocharger System Description

The sensor measures the intake air temperature and pressure between the turbocharger and the throttle body.

B75C Multifunction Intake Air Sensor

The assembly has several functions:

  • The mass air flow sensor is a hot film type sensor that measures the mass of air (not the volume) entering the engine. The signal varies with engine load and is displayed by the scan tool in Hertz (Hz) and grams per second (g/s).
  • The component houses the following sensors:
    • BARO Sensor 1
    • BARO Sensor 2
    • IAT Sensor 1
    • IAT Sensor 2
    • Intake Air Humidity Sensor

K20 Engine Control Module

The control module contains a microprocessor used to process input data to control outputs.

The control module controls a series of actuators to ensure optimal vehicle performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the propulsion system actuators accordingly.

Conditions for Running the DTC
  • DTC P0097, P0098, P0099, P0112, P0113, P0114, P0117, P00F4, P00F5, P00F6, P0118, P0119, P1682 = Not set
  • Time between current ignition cycle and the last time the engine was running=Greater than 8 h
  • Ignition Voltage=Greater than 10.9 V

Frequency the DTC runs=Once—After the running conditions are met

Conditions for Setting the DTC

The following parameters are not within 25°C (45°F) of each other:

  • Start-Up IAT Sensor 1
  • Start-Up IAT Sensor 2
  • Start-Up IAT Sensor 3
Actions Taken When the DTC Sets

DTCs listed in the DTC Descriptor category=Type B DTC

Conditions for Clearing the DTC

DTCs listed in the DTC Descriptor category=Type B DTC

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Master Electrical Component List

Electrical Information ReferenceDTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References

Circuit/System Verification
  1. Ignition » On / Vehicle » In Service Mode
  2. Verify DTC P0097, P0098, P00EA, P00EB, P0112, P0113, P0117, P0118, P1682, P16A7, P16BC, P2199, P2610 is not set
    • If none of the DTCs are set
  3. Verify the scan tool Freeze Frame/Failure Records parameters listed below are within 25°C (45°F) of the following parameter:Start-Up ECT
    • Start-Up IAT Sensor 1
    • Start-Up IAT Sensor 2
    • Start-Up IAT Sensor 3
    • If not within 25°C (45°F) of each other
    • If within 25°C (45°F) of each otheryea
  4. Engine»Idling
  5. Verify the scan tool parameter:=−39 to 149°C (−38 to 300°F) and changes
    • IAT Sensor 1
    • IAT Sensor 2
    • IAT Sensor 3
    • If not in the specified range or does not change
    • If in the specified range and changes
  6. Verify the appropriate scan tool parameter:
    • IAT Sensor 1=The parameter value should not change
    • IAT Sensor 2=The parameter value should not change
    • IAT Sensor 3=The parameter value should not change
    • Perform the action while monitoring the parameter:
    • Wiggle the harness and connector(s):B111B Turbocharger Boost/Intake Air Temperature Sensor
    • Wiggle the harness and connector(s):B75C Multifunction Intake Air Sensor
    • Wiggle the harness and connector(s):K20 Engine Control Module
    • If the parameter value changes

      Repair as necessary » Wiring / Terminal(s) / Electrical Connector(s)

    • If the parameter value does not change
  7. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

    Verify the DTC does not set.

    • If the DTC sets

      Repeat the procedure starting at step 2

    • If the DTC is not set
  8. All OK.
Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair:Diagnostic Repair Verification