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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 104 (Engine Controls And Fuel - 6.0L (L96 LC8) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P2199 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

To minimize the effects of residual engine heat and sensor internal heating elements, perform Steps 1 and 2 of this verification procedure only if the ignition has been OFF for 8 hours or more.

  1. Ignition ON.
  2. Verify the following scan tool parameters are within 25°C (45°F) of each other.
    • Start-Up IAT Sensor 1
    • Start-Up IAT Sensor 2
    • Start-Up ECT
    • If not within 25°C (45°F) 

      Refer to Circuit/System Testing.

    • Go to next step: If within 25°C (45°F) 
  3. Engine idling, verify the following scan tool parameters are between -38 to +149°C (-36 to +300°F).
    • IAT Sensor 1
    • IAT Sensor 2
    • ECT Sensor
    • If not between -38 to +149°C (-36 to +300°F) 

      Refer to Circuit System Testing.

    • Go to next step: If between -38 to +149°C (-36 to +300°F) 
  4. 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.
  5. Verify the DTC does not set.
    • If any DTC sets 

      Refer to Circuit/System Testing.

    • Go to next step: If no DTC sets 
  6. All OK
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