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Tahoe / Yukon Service Manual

DTC P0096 or P0111

Engine Controls and Fuel - 5.3L L84 or 6.2L L87 | Diagnostic Information and Procedures | Document ID: 5433904 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 P0111 Intake Air Temperature Sensor Performance Circuit/System Description This system consists of the following components: B75 Mass Airflow Sensor This DTC sets when the sensor signals contradict each other. Conditions for Running the DTC DTC P0097, P0098, P00EA, P00EB, P0112, P0113, P0117, P0118, P14B6, P1682, P16A7, P16BC, P2610, U060F, U1346, U2011 = Not set Ignition and Start Switch = On Ignition and Start Signal = Greater than 11 V — For greater than 1 s Time between current ignition cycle and the last time the engine was running = Greater than 8 h Frequency the DTC runs = Once — Per cold start-up — 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 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, P0112, P0113, P0117, P0118, P1682, P16A7, P16BC, 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 ⇒ If not within 25°C (45°F) of each other Replace the component: B75 Mass Airflow Sensor ⇓ If within 25°C (45°F) of each other
  4. Verify the 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. Perform the action while monitoring the parameter: Wiggle the harness and connector: B75 Mass Airflow Sensor Wiggle the harness and connector: 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
  5. 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
  6. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification Mass Airflow Sensor Replacement — B75 Mass Airflow Sensor