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Home >> Chevrolet >> 2021 >> Suburban Z71 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0521, P0522, or P0523 (without LM2) >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
5 V Reference P0522 P0522or1 P0523 P0521or1
Signal P0522 P0522or1 P0523 P0521or1
Low Reference - P0523or1 - P0521or1
Low Engine Oil Pressure Indicator = Malfunction
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