P0520 Buick Engine Oil Pressure Sensor/Switch Circuit Malfunction
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
What about the obd code?
The P0520 Buick is detected when the circuit from oil pressure sensor to PCM is malfunction
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Oil pressure warning light ON.
– Oil pressure warning light ON.
P0520 Buick Description
The PCM continuously monitors the engine oil pressure. The Oil Pressure Sensor/Switch sends a signal to the PCM when the engine is running.
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