Causes and Fixes P0523 Code: Engine Oil Pressure Sensor Circuit High Voltage
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How to fix a P0523 Code: Engine Oil Pressure Sensor Circuit High Voltage
A P0523 code is set when the computer (ECM/PCM) detects a high oil pressure reading from the engine oil pressure sensor or switch.
Common causes include a bad oil pressure sensor, wiring issues, mechanical faults in the oil pump, or restricted oil passages.
Possible Causes of a P0523 Code:
Wrong Engine Oil
Bad Engine Oil Pressure Sensor
Wiring (Open/Short)
Oil Pump Fault Causing High Oil Pressure
High Pressure Due to Restriction in Oil Passages
By using this information user assumes all risk of use.
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Good info...I've been chasing this code for a week or so. I had the knock sensor code come up, so i replaced both of those and the oil cooler at the same time. Started it up and then had the p0523 code. Took it apart again and replaced the oil pressure sensor that came with the new cooler with the old one. Still reading the p0523. Looks like I'm going in again to check wiring