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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (Instrument Panel System Displays And Gauges) >> Diagnostic Information and Procedures >> DTC P0521 >> Circuit/System Testing

Circuit/System Testing

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  1. Engine ON, transmission in park, vary the engine speed by 500 RPM.
  2. Verify the scan tool Engine Oil Pressure Sensor parameter changes by more than 34.5 kPa (5 psi).
    • If less than 34.5 kPa (5 psi), replace the EOP sensor.
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