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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Displays And Gauges) >> Diagnostic Information and Procedures >> DTC P0521, P0522, or P0523 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify correct engine oil level and condition.
  2. Ignition ON.
  3. Verify the engine oil pressure indicator turns on and off when commanding the All Indicators ON and OFF with a scan tool.
    • If the engine oil pressure indicator does not turn on and off. 

      Replace the P16 Instrument Cluster.

    • Go to next step: If the engine oil pressure indicator turns on and off 
  4. Verify the scan tool Engine Oil Pressure Sensor parameter is 0 psi (0 kPa).
    • If not 0 psi (0 kPa) 

      Refer to Circuit/System Testing.

    • Go to next step: If 0 psi (0 kPa) 
  5. Engine running.
  6. Verify actual engine oil pressure is within specified range. Refer to Oil Pressure Diagnosis and Testing  in Displays and Gauges Component Replacement Reference .
  7. Verify the scan tool Engine Oil Pressure parameter is within specified range.
    • If not within specified range 

      Refer to Circuit/System Testing.

    • Go to next step: If within specified range 
  8. Verify the engine oil pressure displayed on Instrument Cluster (if equipped) is within specified range.
    • If not within specified range 

      Test or replace the P16 Instrument Cluster.

    • Go to next step: If within specified range 
  9. All OK.
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