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Home >> Cadillac >> 2007 >> STS V >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0521 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition ON and the engine idling, verify the scan tool Engine Oil Pressure Sensor parameter is within 0.7 V - 2.8 V or 8 kPa (1.16 psi) - 880 kPa (127.6 psi).
    • If not within the range of 0.7 V - 2.8 V or 8 kPa (1.16 psi) - 880 kPa (127.6 psi), replace the EOP sensor.