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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Automatic Transmission - JATCO CVT) >> Diagnostic Information and Procedures >> DTC P0841-P0843: Transmission Fluid Pressure Sensor >> Circuit/System Verification

Circuit/System Verification

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  1. Verify the scan tool parameter: Line Pressure=0.09 to 4.7 V
    • If not between 0.09 and 4.7 V 

      Refer to Circuit/System Testing

    • If between 0.09 and 4.7 V 
  2. Verify the scan tool parameter: Line Pressure - Varies with changes in vehicle speed.
    • If Line Pressure does NOT vary with vehicle speed 

      Refer to Circuit/System Testing

    • If Line Pressure does vary with vehicle speed 
  3. Verify DTC P0841, P0842 or P0843 is only set as a history DTC.
    • If any of the DTCs are set as current 

      Refer to Circuit/System Testing

  4. Clear DTC P0841, P0842 or P0843 from history.
  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.
    • If any of the DTCs are set 

      Refer to Circuit/System Testing

    • If none of the DTCs set 
  6. All OK.
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