Possible causes
– Low oil level or motor mechanical fault
– Faulty Oil Pressure sensor
– Oil Pressure Sensor harness is open or shorted
– Oil Pressure Sensor circuit poor electrical connection
– Faulty Oil Pressure sensor
– Oil Pressure Sensor harness is open or shorted
– Oil Pressure Sensor circuit poor electrical connection
When is the code detected?
The P0522 is set when the Powertrain Control Module (PCM) senses a signal voltage higher than the normal operating range of the Engine Oil Pressure (EOP) sensor
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Oil pressure warning light ON
– Oil pressure warning light ON
P0523 CHEVROLET Description
The Powertrain Control Module (PCM) continuously monitors the Engine Oil Pressure (EOP). The EOP sensor measure cahnges in the oil pressure. The EOP sensor changes resistance base on the engine oil pressure.
CHEVROLET Technical Service Bulletins for P0523 code
2004 CHEVROLET AVALANCHE FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM
2004 CHEVROLET EXPRESS FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM
2004 CHEVROLET SILVERADO FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM
2004 CHEVROLET SUBURBAN FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM
2004 CHEVROLET TAHOE FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM
2004 CHEVROLET AVALANCHE ENGINE AND ENGINE COOLING:ENGINE
2004 CHEVROLET AVALANCHE FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES
2004 CHEVROLET EXPRESS ENGINE AND ENGINE COOLING:ENGINE
2004 CHEVROLET EXPRESS FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES
2004 CHEVROLET SILVERADO ENGINE AND ENGINE COOLING:ENGINE