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Tahoe / Yukon Service Manual

DTC P0096, P00E9, or P0111

Engine Controls and Fuel - 3.0L LM2 Diesel | Diagnostic Information and Procedures | Document ID: 5501030 Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis: Strategy Based Diagnosis An overview of each diagnostic category can be found here: Diagnostic Procedure Instructions DTC Descriptor DTC P0096 Intake Air Temperature Sensor 2 Performance DTC P00E9 Intake Air Temperature Sensor 3 Performance DTC P0111 Intake Air Temperature Sensor Performance Circuit/System Description This system consists of the following components: B65 Intake Manifold Pressure and Air Temperature Sensor — Intake Air Temperature Sensor 3 B75 Mass Airflow Sensor — Intake Air Temperature Sensor & Intake Air Temperature Sensor 2 This DTC sets when the sensor signals contradict each other. Conditions for Running the DTC DTC P0097, P0098, P00EA, P00EB, P0112, P0113, P0117, P0118, P1682, P16A7, P16BC, P2610, U060F = 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 Intake Air Temperature Sensor Start-Up Intake Air Temperature Sensor 2 Start-Up Intake Air Temperature 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 Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs DTC 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 any of the DTCs are set Refer to: Diagnostic Trouble Code (DTC) List - Vehicle ⇓ 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 Engine Coolant Temperature Sensor Start-Up Intake Air Temperature Sensor Start-Up Intake Air Temperature Sensor 2 Start-Up Intake Air Temperature Sensor 3 ⇒ If not within 25°C (45°F) of each other { Start-Up Intake Air Temperature Sensor } & { Start-Up Intake Air Temperature Sensor 2 } Replace the component: B75 Mass Airflow Sensor { Start-Up Intake Air Temperature Sensor 3 } Refer to: DTC P00EA-P00EC ⇓ If within 25°C (45°F) of each other
  4. Engine » Idling
  5. Verify the scan tool parameter: = −39 to 149°C (−38 to 300°F) and changes Intake Air Temperature Sensor Intake Air Temperature Sensor 2 Intake Air Temperature Sensor 3 ⇒ If not in the specified range or does not change { Intake Air Temperature Sensor } Refer to: DTC P0097-P0099, P00F4-P00F6, or P0112- P0114 { Intake Air Temperature Sensor 2 } Refer to: DTC P0097-P0099, P00F4-P00F6, or P0112-P0114 { Intake Air Temperature Sensor 3 } Refer to: DTC P00EA-P00EC ⇓ If in the specified range and changes
  6. Verify the appropriate scan tool parameter: Intake Air Temperature Sensor = The value should not spike or drop out. Intake Air Temperature Sensor 2 = The value should not spike or drop out. Intake Air Temperature Sensor 3 = The value should not spike or drop out. Perform the action while monitoring the parameter: Wiggle the harness and connector: B65 Intake Manifold Pressure and Air Temperature Sensor Wiggle the harness and connector: B75 Mass Airflow Sensor Wiggle the harness and connector: K20 Engine Control Module ⇒ If the value spikes or drops out Repair as necessary » Wiring / Terminal(s) / Electrical Connector(s) ⇓ If the value does not spike or drop out
  7. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification Mass Airflow Sensor with Intake Air Temperature Sensor Replacement — B75 Mass Airflow Sensor For control module replacement, programming, and setup refer to: Control Module References