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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1551 (Instrument Panel System Displays & Gauges) >> Diagnostic Information and Procedures >> DTC P0521, P0522, or P0523 >> Conditions for Setting the DTC >> P0521

Conditions for Setting the DTC: P0521

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The ECM detects that the difference between the predicted oil pressure and the actual oil pressure is either less than 47 kPa (6.8 psi) or greater than 50 kPa (7.3 psi).

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