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Home >> Pontiac >> 2005 >> GTO Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays, Gauges And Console >> Diagnostic Information and Procedures >> DTC P0522: PCM Detects That The EOP Sensor Signal Circuit Is Less Than 0.48 Volts >> Circuit Description

Circuit Description

The engine oil pressure (EOP) sensor is mounted in the top rear of the engine. The EOP sensor measures changes in engine oil pressure. The EOP sensor has a 5-volt reference, a ground and a signal circuit. The EOP sensor changes resistance based on engine oil pressure and is used to determine when the oil pressure is below a certain threshold. When the oil pressure reaches a predetermined value, the powertrain control module (PCM) will determine this as low oil pressure. The PCM will then send a serial data message to the Instrument to activate the Check Oil warning icon. When the PCM senses a signal voltage lower than the normal operating range of the sensor, DTC P0522 will set.

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