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Home >> Buick >> 2018 >> Envision Preferred, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0521, P0522, or P0523 >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
5 V Reference P0522 P0522 or 1 P0523 P0521 or 1
Signal P0522 P0522 or 1 P0523 P0521 or 1
Low Reference - P0523 or 1 - P0521 or 1
  1. Low Engine Oil Pressure Indicator = Malfunction
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