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Diagnostic Trouble Code: 028
Diagnostic Trouble Code Name: Driver Window Express Down Switch Circuit
Vehicle Make: Chevrolet
Vehicle Model: Tosca (V250)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Engine Oil Pressure (EOP) Sensor Circuit High Voltage
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTCP0523
Circuit / System Description
he 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 high oil pressure. The PCM will then send a serial data message to the instrument panel (I/P) cluster to activate the Check Oil warning indicator. When the PCM senses a signal voltage higher than the normal operating range of the sensor, this DTC P0523 will set.
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