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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 310 (Instrument Panel System Displays And Gauges) >> Diagnostic Information and Procedures >> DTC P0521 (5.3L Engine) >> 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).
  3. If the pressure tests normal, replace the EOP sensor.
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