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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 356 (Engine Controls And Fuel - 3.6L (LGX) - DTC P0446 To DTC P3436 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2199: Intake Air Temperature (IAT) Sensor 1-2 Not Plausible >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition On.
  2. Verify that DTC DTC P0097, P0098, P0099, P00F4, P00F5, P00F6, P0102, P0103, P0112, P0113, P0114, P0641, P0651, P0697, or P06A3 is not set.
    • If none of the DTCs are set 
  3. Ignition ON.
  4. Verify the following scan tool parameters are within 15°C (27°F) of each other.
    • Start-Up IAT Sensor 1
    • Start-Up IAT Sensor 2
    • If not within 15°C (27°F) 

      Refer to Circuit/System Testing.

    • If within 15°C (27°F) 
  5. Engine running, verify the following scan tool parameters are between: -38 and +149°C (-36 and +300°F).
    • IAT Sensor 1
    • IAT Sensor 2
    • If not between: -38 and +149°C (-36 and +300°F) 

      Refer to Circuit/System Testing.

    • If between: -38 and +149°C (-36 and +300°F) 
  6. 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.
  7. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  8. All OK
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