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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P0016 - P049D)) >> Diagnostic Information And Procedures >> DTC P0407, P0408, P046E, Or P046F: Exhaust Gas Recirculation Cooler Coolant Inlet Temperature Sensor >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON.
  2. Verify the scan tool EGR Cooler Coolant Inlet Temperature parameter is warmer than -40°C (-40°F) and colder than 150°C (302°F) and changes with engine run time.
    • If colder than -39°C (-38°F) or warmer than 149°C (300°F) or does not change 

      Refer to Circuit/System Testing.

    • Go to next step: If warmer than -40°C (-40°F) and colder than 150°C (302°F) and changes 
  3. 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.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • Go to next step: If the DTC does not set 
  5. All OK.
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