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Oil pressure codes (P052x)

Every CheckLight guide in this code family.

P0520 Engine Oil Pressure Sensor/Switch Circuit
P0521 Engine Oil Pressure Sensor/Switch Range/Performance
P0524 Engine Oil Pressure Too Low

Plain-English OBD2 check engine codes, explained from cited sources.

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A flashing check engine light means stop driving soon. Brake or oil pressure warnings need immediate attention. This site isn't a substitute for a qualified mechanic.

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